cack

A squawk.

Of course, so excitable a nature must find other than physical outlet for his irrepressible energy, and he accompanies his movements by more or less appropriate notes: scolding cacks, clinking, metallic rattles, musical trills, tree-toadlike krrrings – in fact, he possesses an almost endless vocabulary .

[…]for on occasions he gives utterance to an entirely uncharacteristic series of cacking notes, and even mounts high in the tree to sing a hesitating medley of the same unmusical cacks, broken whistled calls, and attempted trills.

A discordant note.

A cackling goose (Branta hutchinsii)

[…] cacks, " the whitefronts or specklebellies in the Sacramento Valley

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.

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.

2000, Minnesota Ornithologists′ Union, The Loon, Volumes 72-74, page 37, While the Gyrfalcon cacked loudly on each stoop, the owl did not scream.

To incorrectly play a note by hitting a partial other than the one intended.

The bugler hopes not to cack during his performance.

To laugh.

I had to cack when you fell down the stairs.

To defecate.

Can't cack... won't cack, My bum hole has gone on strike, I've huffed and puffed, grunted and groaned, And squeezed as hard as I liked, I've leant myself backwards, leant to the front, Raised my knees and then put them back, I've gripped the seat and pushed like hell, But still...I can't have a cack.

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.’

[…] through the open door, now directly below his feet, and nearly cacked his breeks when the stretcher skidded slightly on the shiny metal floor.

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[…]

To kill.

He tried to shoot me, so I cacked him.

Stay, by your leave I will put in a distinguo; your goose has cacked.

To cheat.

Thus was I then to lose my faithfull preceptress, as did the philosophers of the town the white crow of her profession: for besides that she never ransacked her customers, whose taste too she ever studiously consulted, she never cacked her pupils with unconscionable extortions, nor ever put their hard earnings, as she called them, under the contribution of poundage.