Source : Webster's Revised Unabridged Dictionary (1913)

Loose \Loose\, v. i.
   To set sail. [Obs.] --Acts xiii. 13.

Loose \Loose\, n.
   1. Freedom from restraint. [Obs.] --Prior.

   2. A letting go; discharge. --B. Jonson.

   {To give a loose}, to give freedom.

            Vent all its griefs, and give a loose to sorrow.
                                                  --Addison.

Loose \Loose\, v. n. [imp. & p. p. {Loosed}; p. pr. & vb. n.
   {Loosing}.] [From {Loose}, a.]
   1. To untie or unbind; to free from any fastening; to remove
      the shackles or fastenings of; to set free; to relieve.

            Canst thou . . . loose the bands of Orion ? --Job.
                                                  xxxviii. 31.

            Ye shall find an ass tied, and a colt with her;
            loose them, and bring them unto me.   --Matt. xxi.
                                                  2.

   2. To release from anything obligatory or burdensome; to
      disengage; hence, to absolve; to remit.

            Art thou loosed from a wife ? seek not a wife. --1
                                                  Cor. vii. 27.

            Whatsoever thou shalt loose on earth shall be loosed
            in heaven.                            --Matt. xvi.
                                                  19.

   3. To relax; to loosen; to make less strict.

            The joints of his loins were loosed.  --Dan. v. 6.

   4. To solve; to interpret. [Obs.] --Spenser.

Loose \Loose\, a. [Compar. {Looser}; superl. {Loosest}.] [OE.
   loos, lous, laus, Icel. lauss; akin to OD. loos, D. los, AS.
   le['a]s false, deceitful, G. los, loose, Dan. & Sw. l["o]s,
   Goth. laus, and E. lose. ? See {Lose}, and cf. {Leasing}
   falsehood.]
   1. Unbound; untied; unsewed; not attached, fastened, fixed,
      or confined; as, the loose sheets of a book.

            Her hair, nor loose, nor tied in formal plat.
                                                  --Shak.

   2. Free from constraint or obligation; not bound by duty,
      habit, etc.; -- with from or of.

            Now I stand Loose of my vow; but who knows Cato's
            thoughts ?                            --Addison.

   3. Not tight or close; as, a loose garment.

   4. Not dense, close, compact, or crowded; as, a cloth of
      loose texture.

            With horse and chariots ranked in loose array.
                                                  --Milton.

   5. Not precise or exact; vague; indeterminate; as, a loose
      style, or way of reasoning.

            The comparison employed . . . must be considered
            rather as a loose analogy than as an exact
            scientific explanation.               --Whewel.

   6. Not strict in matters of morality; not rigid according to
      some standard of right.

            The loose morality which he had learned. --Sir W.
                                                  Scott.

   7. Unconnected; rambling.

            Vario spends whole mornings in running over loose
            and unconnected pages.                --I. Watts.

   8. Lax; not costive; having lax bowels. --Locke.

   9. Dissolute; unchaste; as, a loose man or woman.

            Loose ladies in delight.              --Spenser.

   10. Containing or consisting of obscene or unchaste language;
       as, a loose epistle. -- Dryden.

   {At loose ends}, not in order; in confusion; carelessly
      managed.

   {Fast and loose}. See under {Fast}.

   {To break loose}. See under {Break}.

   {Loose pulley}. (Mach.) See {Fast and loose pulleys}, under
      {Fast}.

   {To let loose}, to free from restraint or confinement; to set
      at liberty.

Source : WordNet®

loose
     adj 1: not restrained or confined or attached; "a pocket full of
            loose bills"; "knocked the ball loose"; "got loose
            from his attacker"
     2: not compact or dense in structure or arrangement; "loose
        gravel" [ant: {compact}]
     3: (of a ball in sport) not in the possession or control of any
        player; "a loose ball"
     4: not tight; not closely constrained or constricted or
        constricting; "loose clothing"; "the large shoes were very
        loose" [ant: {tight}]
     5: not officially recognized or controlled; "an informal
        agreement"; "a loose organization of the local farmers"
        [syn: {informal}]
     6: not literal; "a loose interpretation of what she had been
        told"; "a free translation of the poem" [syn: {free}, {liberal}]
     7: emptying easily or excessively; "loose bowels" [syn: {lax}]
     8: not affixed; "the stamp came loose" [syn: {unaffixed}] [ant:
         {affixed}]
     9: not tense or taut; "the old man's skin hung loose and gray";
        "slack and wrinkled skin"; "slack sails"; "a slack rope"
        [syn: {slack}]
     10: (of textures) full of small openings or gaps; "an open
         texture"; "a loose weave" [syn: {open}]
     11: not fixed firmly or tightly; "the bolts became loose over
         time"; "a loose chair leg"; "loose bricks"
     12: lacking a sense of restraint or responsibility; "idle talk";
         "a loose tongue" [syn: {idle}]
     13: not carefully arranged in a package; "a box of loose nails"
     14: freely producing mucus; "a loose phlegmy cough"
     15: having escaped, especially from confinement; "a convict
         still at large"; "searching for two escaped prisoners";
         "dogs loose on the streets"; "criminals on the loose in
         the neighborhood" [syn: {at large(p)}, {at liberty(p)}, {escaped},
          {on the loose(p)}]
     16: casual and unrestrained in sexual behavior; "her easy
         virtue"; "he was told to avoid loose (or light) women";
         "wanton behavior" [syn: {easy}, {light}, {promiscuous}, {sluttish},
          {wanton}]
     17: not bound or fastened or gathered together; "loose pages";
         "loose papers"

loose
     adv : without restraint; "cows in India are running loose" [syn: {free}]

loose
     v 1: grant freedom to; free from confinement [syn: {free}, {liberate},
           {release}, {unloose}, {unloosen}] [ant: {confine}]
     2: turn loose or free from restraint; "let loose mines"; "Loose
        terrible plagues upon humanity" [syn: {unleash}, {let
        loose}]
     3: make loose or looser; "loosen the tension on a rope" [syn: {loosen}]
        [ant: {stiffen}]
     4: become loose or looser or less tight; "The noose loosened";
        "the rope relaxed" [syn: {loosen}, {relax}] [ant: {stiffen}]