tipsheet means A page or mailing of information and hints. Lexicurio rates it Sui generis — a strength score of 92 out of 100.
Etymology
From tip + sheet.
noun
- A page or mailing of information and hints“A gross-gutted, bulb-nosed, bourbon-stanky Boston flatfoot in plain clothes wrinkled white sox, with a race track tip-sheet stuffed in his back pocket trying real hard to mingle unnoticed at an elegant Buddies "do" to glean inside-dope.”