1. (US prison) a short sentence, max. one year.
|Spokane Press (WA) 22 Sept. 7/3: When a thief serves a short time in prison he calls it a ‘Valentine’.|
|NY Tribune 8 June 7/5: A ‘valentine’ is a short sentence.|
|Keys to Crookdom 422: Valentine. One-year term in prison.|
|Criminal Sl. (rev. edn).|
2. (US police) a reprimand, a punishment.
|Third Degree (1931) 175: In some precincts, the men belonging to the local political club would insist on picking out their posts and would escape reserve or extra duty [...] If a conscientious or over-ambitious sergeant gave them a ‘valentine,’ the captain would bawl him out for looking for trouble.|