can

barrel, canister (also cannister), drum, tin

backside, behind, bottom, breech, bum, buns, butt, buttocks, cheeks, derriere (or derrière), duff, fanny, hams, haunches, hunkers, posterior, rear, rear end, rump, seat, tail, tail end

break, break off, break up, cease, cut off, cut out, desist (from), discontinue, drop, end, give over, halt, knock off, lay off, leave off, pack (up or in), quit, shut off, stop

ax (or axe), bounce, cashier, discharge, dismiss, fire, muster out, pink-slip, release, remove, retire, sack, terminate, turn off