A pilferer. Morning sneak; one who pilfers early in the morning, before it is light. Evening sneak; an evening pilferer. Upright sneak: one who steals pewter pots from the alehouse boys employed to collect them. To go upon the sneak; to steal into houses whose doors are carelessly left open. CANT.
SNEAK
Meaning of SNEAK in English
Slang English vocab. Английский сленговый словарь. 2012