checkback

A play of a designated card as a prompt to one's partner to respond with a play indicating the kinds of card he/she holds.

Noun

  1. A play of a designated card as a prompt to one's partner to respond with a play indicating the kinds of card he/she holds.
    • True, you need some form of checkback, which is an artificial two-club or two-diamond rebid by the responder to ask for more information. - 2007 May 10, Phillip Alder, “From a Nevada Tournament, Defense by the...

Origin

From check + back.