sneaker /ˈsnikɚ/ noun5 •(US, Australia) An athletic shoe with a soft, rubber sole. A trainer.He was wearing a stained white singlet that revealed tufts of black hair under his arms, and slept-in white canvas trousers and rubber-soled sneakers. — 1954 •One who sneaks.Beshrew the man who on such a day as this, the general festival, should affect to stand aloof. I am none of those sneakers. I am free of the corporation, and care not who knows it. — 1823 •A sneaker male. •(dialect, no longer used) A vessel of drink.Spectator I have just left the right worshipful and his myrmidons about a sneaker of five gallons! •(India, no longer used) A large cup (or small basin) with a saucer and cover. formssneakers