Sneaker

n.	1.	One who sneaks.
	2.	A vessel of drink. A sneaker of five gallons. - Spectator.
	3.	A type of soft shoe with a flat, pliable, typically rubber or other soft sole, and canvas-like upper, used in sports such as tennis, or for comfort. Called sneaker because they give no warning of one's approach. Usually used in the pl.
	4.	A punch bowl.

Noun	1.	sneaker - a canvas shoe with a pliable rubber sole Synonyms: gym shoe, tennis shoe
	2.	sneaker - someone acting as an informer or decoy for the police Synonyms: canary, fink, snitch, stoolie, stoolpigeon, snitcher, sneak

betrayer, blabber, canary, fink, informer, rat, sneak, snitch, snitcher, squealer, stoolie, stoolpigeon