sneaker Meaning, Definition & Usage

  1. noun a canvas shoe with a pliable rubber sole
    tennis shoe; gym shoe.
  2. noun someone acting as an informer or decoy for the police
    stool pigeon; canary; sneak; stoolpigeon; fink; stoolie; snitch; snitcher.

WordNet

Sneak"er noun
Definitions
  1. One who sneaks. Lamb.
  2. A vessel of drink. Prov. Eng.
    A sneaker of five gallons. Spectator.
    A type of soft shoe with a flat, pliable, typically rubber sole, and canvas-like upper, used in sports or for comfort.

Webster 1913