Source : Webster's Revised Unabridged Dictionary (1913)

All \All\, n.
   The whole number, quantity, or amount; the entire thing;
   everything included or concerned; the aggregate; the whole;
   totality; everything or every person; as, our all is at
   stake.

         Death, as the Psalmist saith, is certain to all.
                                                  --Shak.

         All that thou seest is mine.             --Gen. xxxi.
                                                  43.

   Note: All is used with of, like a partitive; as, all of a
         thing, all of us.

   {After all}, after considering everything to the contrary;
      nevertheless.

   {All in all}, a phrase which signifies all things to a
      person, or everything desired; (also adverbially) wholly;
      altogether.

            Thou shalt be all in all, and I in thee, Forever.
                                                  --Milton.

            Trust me not at all, or all in all.   --Tennyson.

   {All in the wind} (Naut.), a phrase denoting that the sails
      are parallel with the course of the wind, so as to shake.
      

   {All told}, all counted; in all.

   {And all}, and the rest; and everything connected. ``Bring
      our crown and all.'' --Shak.

   {At all}.
   (a) In every respect; wholly; thoroughly. [Obs.] ``She is a
       shrew at al(l).'' --Chaucer.
   (b) A phrase much used by way of enforcement or emphasis,
       usually in negative or interrogative sentences, and
       signifying in any way or respect; in the least degree or
       to the least extent; in the least; under any
       circumstances; as, he has no ambition at all; has he any
       property at all? ``Nothing at all.'' --Shak. ``If thy
       father at all miss me.'' --1 Sam. xx. 6.

   {Over all}, everywhere. [Obs.] --Chaucer.

   Note: All is much used in composition to enlarge the meaning,
         or add force to a word. In some instances, it is
         completely incorporated into words, and its final
         consonant is dropped, as in almighty, already, always:
         but, in most instances, it is an adverb prefixed to
         adjectives or participles, but usually with a hyphen,
         as, all-bountiful, all-glorious, allimportant,
         all-surrounding, etc. In others it is an adjective; as,
         allpower, all-giver. Anciently many words, as, alabout,
         alaground, etc., were compounded with all, which are
         now written separately.

Source : WordNet®

all in all
     adv : with everything considered (and neglecting details);
           "altogether, I'm sorry it happened"; "all in all, it's
           not so bad" [syn: {on the whole}, {altogether}, {tout
           ensemble}]