Source : Webster's Revised Unabridged Dictionary (1913)

Out \Out\, adv. [OE. out, ut, oute, ute, AS. [=u]t, and [=u]te,
   [=u]tan, fr. [=u]t; akin to D. uit, OS. [=u]t, G. aus, OHG.
   [=u]z, Icel. [=u]t, Sw. ut, Dan. ud, Goth. ut, Skr. ud.
   [root]198. Cf. {About}, {But}, prep., {Carouse}, {Utter}, a.]
   In its original and strict sense, out means from the interior
   of something; beyond the limits or boundary of somethings; in
   a position or relation which is exterior to something; --
   opposed to {in} or {into}. The something may be expressed
   after of, from, etc. (see {Out of}, below); or, if not
   expressed, it is implied; as, he is out; or, he is out of the
   house, office, business, etc.; he came out; or, he came out
   from the ship, meeting, sect, party, etc. Out is used in a
   variety of applications, as:

   1. Away; abroad; off; from home, or from a certain, or a
      usual, place; not in; not in a particular, or a usual,
      place; as, the proprietor is out, his team was taken out.
      ``My shoulder blade is out.'' --Shak.

            He hath been out (of the country) nine years.
                                                  --Shak.

   2. Beyond the limits of concealment, confinement, privacy,
      constraint, etc., actual of figurative; hence, not in
      concealment, constraint, etc., in, or into, a state of
      freedom, openness, disclosure, publicity, etc.; as, the
      sun shines out; he laughed out, to be out at the elbows;
      the secret has leaked out, or is out; the disease broke
      out on his face; the book is out.

            Leaves are out and perfect in a month. --Bacon.

            She has not been out [in general society] very long.
                                                  --H. James.

   3. Beyond the limit of existence, continuance, or supply; to
      the end; completely; hence, in, or into, a condition of
      extinction, exhaustion, completion; as, the fuel, or the
      fire, has burned out. ``Hear me out.'' --Dryden.

            Deceitiful men shall not live out half their days.
                                                  --Ps. iv. 23.

            When the butt is out, we will drink water. --Shak.

   4. Beyond possession, control, or occupation; hence, in, or
      into, a state of want, loss, or deprivation; -- used of
      office, business, property, knowledge, etc.; as, the
      Democrats went out and the Whigs came in; he put his money
      out at interest. ``Land that is out at rack rent.''
      --Locke. ``He was out fifty pounds.'' --Bp. Fell.

            I have forgot my part, and I am out.  --Shak.

   5. Beyond the bounds of what is true, reasonable, correct,
      proper, common, etc.; in error or mistake; in a wrong or
      incorrect position or opinion; in a state of disagreement,
      opposition, etc.; in an inharmonious relation. ``Lancelot
      and I are out.'' --Shak.

            Wicked men are strangely out in the calculating of
            their own interest.                   --South.

            Very seldom out, in these his guesses. --Addison.

   6. Not in the position to score in playing a game; not in the
      state or turn of the play for counting or gaining scores.

   Note: Out is largely used in composition as a prefix, with
         the same significations that it has as a separate word;
         as outbound, outbreak, outbuilding, outcome, outdo,
         outdoor, outfield. See also the first Note under
         {Over}, adv.

   {Day in, day out}, from the beginning to the limit of each of
      several days; day by day; every day.

   {Out and out}.
      (a) adv. Completely; wholly; openly.
      (b) adj. Without any reservation or disguise; absolute;
          as, an out and out villain. [As an {adj}. written also
          {out-and-out}.]

   {Out at}, {Out in}, {Out on}, etc., elliptical phrases, that
      to which out refers as a source, origin, etc., being
      omitted; as, out (of the house and) at the barn; out (of
      the house, road, fields, etc., and) in the woods.

            Three fishers went sailing out into the west, Out
            into the west, as the sun went down.  --C. Kingsley.

   Note: In these lines after out may be understood, ``of the
         harbor,'' ``from the shore,'' ``of sight,'' or some
         similar phrase. The complete construction is seen in
         the saying: ``Out of the frying pan into the fire.''

   {Out from}, a construction similar to {out of} (below). See
      {Of} and {From}.

   {Out of}, a phrase which may be considered either as composed
      of an adverb and a preposition, each having its
      appropriate office in the sentence, or as a compound
      preposition. Considered as a preposition, it denotes, with
      verbs of movement or action, from the interior of; beyond
      the limit: from; hence, origin, source, motive, departure,
      separation, loss, etc.; -- opposed to {in} or {into}; also
      with verbs of being, the state of being derived, removed,
      or separated from. Examples may be found in the phrases
      below, and also under Vocabulary words; as, out of breath;
      out of countenance.

   {Out of cess}, beyond measure, excessively. --Shak.

   {Out of character}, unbecoming; improper.

   {Out of conceit with}, not pleased with. See under {Conceit}.
      

   {Out of date}, not timely; unfashionable; antiquated.

   {Out of door}, {Out of doors}, beyond the doors; from the
      house; in, or into, the open air; hence, figuratively,
      shut out; dismissed. See under {Door}, also,
      {Out-of-door}, {Outdoor}, {Outdoors}, in the Vocabulary.
      ``He 's quality, and the question's out of door,''
      --Dryden.

   {Out of favor}, disliked; under displeasure.

   {Out of frame}, not in correct order or condition; irregular;
      disarranged. --Latimer.

   {Out of hand}, immediately; without delay or preparation.
      ``Ananias . . . fell down and died out of hand.''
      --Latimer.

Door \Door\, n. [OE. dore, dure, AS. duru; akin to OS. dura,
   dor, D. deur, OHG. turi, door, tor gate, G. th["u]r, thor,
   Icel. dyrr, Dan. d["o]r, Sw. d["o]rr, Goth. daur, Lith.
   durys, Russ. dvere, Olr. dorus, L. fores, Gr. ?; cf. Skr.
   dur, dv[=a]ra. ????. Cf. {Foreign}.]
   1. An opening in the wall of a house or of an apartment, by
      which to go in and out; an entrance way.

            To the same end, men several paths may tread, As
            many doors into one temple lead.      --Denham.

   2. The frame or barrier of boards, or other material, usually
      turning on hinges, by which an entrance way into a house
      or apartment is closed and opened.

            At last he came unto an iron door That fast was
            locked.                               --Spenser.

   3. Passage; means of approach or access.

            I am the door; by me if any man enter in, he shall
            be saved.                             --John x. 9.

   4. An entrance way, but taken in the sense of the house or
      apartment to which it leads.

            Martin's office is now the second door in the
            street.                               --Arbuthnot.

   {Blank door}, {Blind door}, etc. (Arch.) See under {Blank},
      {Blind}, etc.

   {In doors}, or {Within doors}, within the house.

   {Next door to}, near to; bordering on.

            A riot unpunished is but next door to a tumult.
                                                  --L'Estrange.
      

   {Out of doors}, or {Without doors}, and, colloquially, {Out
   doors}, out of the house; in open air; abroad; away; lost.

            His imaginary title of fatherhood is out of doors.
                                                  --Locke.

   {To lay (a fault, misfortune, etc.) at one's door}, to charge
      one with a fault; to blame for.

   {To lie at one's door}, to be imputable or chargeable to.

            If I have failed, the fault lies wholly at my door.
                                                  --Dryden.

   Note: Door is used in an adjectival construction or as the
         first part of a compound (with or without the hyphen),
         as, door frame, doorbell or door bell, door knob or
         doorknob, door latch or doorlatch, door jamb, door
         handle, door mat, door panel.

Source : WordNet®

out of doors
     adv : outside a building; "in summer we play outside" [syn: {outside},
            {outdoors}, {alfresco}] [ant: {inside}, {inside}]