1. An ear that is swollen, hardened, and deformed from extravasation of blood following repeated blows, resulting in an irregular thickening of scar tissue. Common among boxers.
[Origin: 1905-10, Americanism]
He was hairy and his muscles swelled like iron all over him, miner’s style, and his naturally hard face hadst not been beautified by a broken nose and a cauliflower ear. Altogether, Biff looked like what he was — a rough and ready fighting man.
[from “Texas Fists”]