Bash

• POS: Noun, Verb (intransitive), Verb (transitive)

CIDE DICTIONARY

Bash, v. t. & i. [OE. baschen, baissen. See Abash.].

 To abash; to disconcert or be disconcerted or put out of countenance.  [1913 Webster]
"His countenance was bold and bashed not."  [1913 Webster]

Bash, v. t. [Perh. of imitative origin; or cf. Dan. baske to strike, bask a blow, Sw. basa to beat, bas a beating.].

 To strike heavily; to beat; to crush.  Hall Caine.  [1913 Webster]
"Bash her open with a rock."  [Webster 1913 Suppl.]

Bash, n. 

•  a forceful blow, especially one that does damage to its target.  [PJC]
•  a elaborate or lively social gathering or party.  [PJC]

OXFORD DICTIONARY

Bash, v. & n.
--v.
1 tr. a strike bluntly or heavily. b (often foll. by up) colloq. attack violently. c (often foll. by down, in, etc.) damage or break by striking forcibly.
2 intr. (foll. by into) collide with.
--n.
1 a heavy blow.
2 sl. an attempt (had a bash at painting).
3 sl. a party or social event.

Etymology

imit., perh. f. bang, smash, dash, etc.

THESAURUS

Bash

bang, bat, batter, beat, beating, belt, biff, blow, blowout, bonk, bruise, buffet, bung, bung up, chop, clap, clip, clobber, clout, clump, coldcock, contuse, crack, cut, dash, deal, deal a blow, deck, dig, dint, drub, drubbing, drumming, fetch, fetch a blow, fusillade, hit, hit a clip, jab, knock, knock cold, knock down, knock out, let have it, lick, maul, paste, pelt, plunk, poke, pound, punch, rap, shindy, slam, slog, slug, smack, smash, smite, snap, soak, sock, strike, strike at, stroke, swat, swing, swipe, tattoo, thump, thwack, wallop, whack, wham, whop, yerk