1 rubbish, (stuff and) nonsense, balderdash, moonshine, gibberish, gobbledegook or gobbledygook, tommy-rot, bunkum, garbage, twaddle, Colloq rot, flapdoodle, crap, codswallop, bosh, piffle, hooey, bunk, malarkey, poppycock, boloney or baloney, eyewash, hogwash, bilge-water, bull, Scots havers, Brit tosh, gammon, US a crock, hokum, gurry, horse feathers, Slang Brit (a load of (old)) cobblers, Taboo Slang bullshit, horseshit, Brit balls, US a crock of shit:
Don't believe him - he is talking trash.
2 (Chiefly US and Canadian) junk, brummagem, knick-knacks, gewgaws, trifles, bric-à-brac, frippery or fripperies, bits and pieces, odds and ends, trinkets, tinsel, 'Not Wanted on Voyage':
There was mostly trash in the flea market, but there were one or two more valuable items.
3 (In US and Canada) rubbish, litter, garbage, waste, refuse, junk, debris, rubble, dregs, dross, scoria, slag, offscourings, dirt, sweepings, Slang crap:
The service comes to remove the trash once a week.
4 Slang chiefly US destroy, ruin, wreck, vandalize, deface:
The lodgers trashed the flat before doing a moonlight flit.