sippy

plural sippies

1. informalA little sip; less than a serving of some particular drink

   Would you like a little water, Sue? SUE. Well, perhaps a sippy. (SUE squirts some water into a paper cup.)

   1999, Elaine May, Alan Arkin, Power Plays: Three One-Act Plays, →ISBN, page 70

   1 more example

   By going to the canteen as soon as it opened some people hoped to cadge money, or one or more cans, or at least a 'sippy'.

   2002, David McKnight, From Hunting to Drinking, →ISBN, page 108