Green’s Dictionary of Slang

1. (Aus.) a piglet.

1851

Bell’s Life in Sydney 18 Jan. 2/7: Mrs Mary West was mulcted in the penalty of ten shillings [...] for her keeping her squealers in the vicinity of her residence.

2. (US) a cooked pig’s foot.

1896

Sun (NY) 28 Mar. 2/6: ‘Gimme a Trilby foot’ means ‘Pass me a fried pig’s foot’. The same deasire is expressed in a request for a ‘grunter’ or a ‘squealer’.

3. (UK tramp) a pork sausage.

1936

W.A. Gape Half a Million Tramps 173: The owner of the pork sausages went into a towering rage [...] ‘I’ll tear the guts out of the body of him that stole my “squealers”.’ [Ibid.] 175: Maggie stole my meat. Them two pork squealers there.