WordNet (r) 3.0 (2006):

put away
    v 1: place in a place where something cannot be removed or
         someone cannot escape; "The parents locked her daughter up
         for the weekend"; "She locked her jewels in the safe" [syn:
         lock in, lock away, lock, put away, shut up,
         shut away, lock up]
    2: throw or cast away; "Put away your worries" [syn: discard,
       fling, toss, toss out, toss away, chuck out, cast
       aside, dispose, throw out, cast out, throw away,
       cast away, put away]
    3: lock up or confine, in or as in a jail; "The suspects were
       imprisoned without trial"; "the murderer was incarcerated for
       the rest of his life" [syn: imprison, incarcerate, lag,
       immure, put behind bars, jail, jug, gaol, put
       away, remand]
    4: stop using; "the children were told to put away their toys";
       "the students put away their notebooks" [syn: put away,
       put aside]
    5: kill gently, as with an injection; "the cat was very ill and
       we had to put it to sleep" [syn: put away, put to sleep]
    6: eat up; usually refers to a considerable quantity of food;
       "My son tucked in a whole pizza" [syn: tuck in, tuck
       away, put away]
    7: turn away from and put aside, perhaps temporarily; "it's time
       for you to put away childish things" [syn: put away, put
       aside]

Moby Thesaurus II by Grady Ward, 1.0:

155 Moby Thesaurus words for "put away":
   accomplish, achieve, annihilate, assassinate, attain, bank,
   bereave of life, bosom, bottle up, bump off, bundle away, bury,
   cache, carry away, carry off, chloroform, coffer, compass, consume,
   consummate, cool, cut down, cut off, deal with, delay, deposit,
   deprive of life, destroy, devour, discharge, dismiss, dispatch,
   dispose of, divorce, do, do away with, do for, do in, do the job,
   do the trick, do to death, down, dust off, eat up, effect,
   effectuate, embosom, enact, end, entomb, execute, exterminate,
   fetch, file, file and forget, finish, finish off, fulfill,
   get away with, get down, grant a divorce, grant an annulment,
   hide away, hutch, immolate, ingest, inhume, inter, keep hidden,
   keep secret, kill, knock off, launch into eternity, lay aside,
   lay away, lay by, lay down, lay in, lay in store, lay low,
   liquidate, lock up, lodge, lynch, make, make away with, manage,
   martyr, martyrize, obtain a divorce, pack away, part, perform,
   pigeonhole, plant, poison, polish off, postpone, produce, punish,
   purge, push aside, put aside, put asunder, put down,
   put in mothballs, put to death, put to sleep, realize,
   remove from life, reposit, reservoir, sacrifice, salt away,
   salt down, scrag, seal up, secrete, separate, sepulcher, sepulture,
   set aside, set by, shelve, shift, sideline, slay, split up, starve,
   stash, store, store away, stow, stow away, stow down, succeed,
   sue for divorce, surround, swallow, swill, table, table the motion,
   take care of, take down, take in, take life, take off, tomb,
   tuck in, turn the trick, unmarry, untie the knot, warehouse, work,
   work out