[SE check, a token, a ticket; phr. underpinned by gambling imagery; thus Asbury, Sucker’s Progress (1938) 18: ‘An extraordinary number of the terms, technical and otherwise, which were employed by Faro players in the palmy days of the game have passed into the language [...] and are commonly used by millions who never heard of Faro. Here are some of them: [...] Pass in his checks — He cashed in.’](US)
[1920s–70s] a measure of a drug, usu. 28g (1oz) in a folded packet.