cack /kæk/verb 8noun 9forms 3phrases 2 verb8 •(slang) To defecate. •(slang) To defecate (on); to shit.‘I asked him once if he got nervous before doing it,’ says Astin, ‘and he said he was absolutely cacking himself before going on stage, but as soon as he got there it was fantastic.’ — 2005 •(slang) To excrete (something) by defecation.He smelled the ferrous oxide of blood and the farmyard stench of shit. He'd cacked it. He was empty and he'd cacked his load. The brushman came over, lisping slightly[…] — 2016 •(US, slang) To kill.He tried to shoot me, so I cacked him. •(slang) To laugh.I had to cack when you fell down the stairs. •To incorrectly play a note by hitting a partial other than the one intended.The bugler hopes not to cack during his performance. •To squawk.Still fluffy with down, she often attacks the other birds, cacking and flashing her wings, or threatens me as I watch through the tiny peephole of the near box. — 1990 •To cheat. noun9 •(slang) Rubbish; anything worthless.'See that' said the man, pointing with his fork at a trace of soemthing on the rim, 'that's not been washed properly. That's a bit of old cack on there.' — 2009 •(slang) Excrement.I dive back in along the cobbles, step over the cack, wall an fence closin me down, barbed wire left, razor wire right, follow by puttied-in broken glass, spike rails an stuck-on warnings about dogs. — 2013 •(slang) An act of defecation. •A squawk. •A discordant note. •(slang) Penis. •(slang) A young child.Seniors bully cacks because they were bullied as cacks. Old boys who were miserable here send their sons here to make them miserable. It's called tradition. — 2000 •(informal) A cackling goose (Branta hutchinsii)White geese aren't supposed to be such good eating and most of the gunners want "specs" or "cacks" or Hutchins or Canadas but I'll eat snow geese any time you don't want 'em. — 2012 •An inexpensive boot or shoe made in the 19th or early 20th century for a baby or young child. formscacked · cacking · cacks Phrases with cack cack onTo shit on; to disparage or harshly criticize. cack upTo vomit or hack up.