The Collaborative International Dictionary of English v.0.48:

clobber \clobber\ n.
   personal possessions; -- an informal term; as, did you take
   all your clobber?.

   Syn: stuff.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

clobber
    n 1: informal terms for personal possessions; "did you take all
         your clobber?" [syn: stuff, clobber]
    v 1: strike violently and repeatedly; "She clobbered the man who
         tried to attack her" [syn: clobber, baste, batter]
    2: beat thoroughly and conclusively in a competition or fight;
       "We licked the other team on Sunday!" [syn: cream, bat,
       clobber, drub, thrash, lick]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "clobber":
   bang, bash, bat, bear the palm, beat, beat all hollow, belt, best,
   biff, blank, blast, bonk, bulldoze, clap, clip, clout, clump,
   coldcock, crack, cream, cut, dash, deal, deal a blow, deck, defeat,
   defeat utterly, drub, fetch, fetch a blow, hit, hit a clip, jab,
   knock, knock cold, knock down, knock out, lambaste, let have it,
   lick, overbear, overwhelm, paste, plunk, poke, punch, schmear,
   shellac, shut out, skin, skunk, slam, slog, slug, smack, smash,
   smear, smite, smother, snap, snow under, soak, sock, steamroller,
   strike, strike at, swat, swipe, take the cake, thrash, thump,
   thwack, trim, triumph, trounce, wallop, whack, wham, whelm,
   whitewash, whomp, whop, win, worst, yerk



The Jargon File (version 4.4.7, 29 Dec 2003):

clobber
 vt.

    To overwrite, usually unintentionally: ?I walked off the end of the array
    and clobbered the stack.? Compare mung, scribble, trash, and smash
    the stack.


The Free On-line Dictionary of Computing (30 December 2018):

clobber

    To overwrite, usually unintentionally: "I walked off
   the end of the array and clobbered the stack."

   Compare mung, scribble, trash, smash the stack.

   [Jargon File]

   (1994-12-16)