shell game

1 ENTRIES FOUND:
shell game noun
plural shell games
shell game
noun
plural shell games
Britannica Dictionary definition of SHELL GAME
[count] US
: a dishonest betting game in which someone hides a ball under one of three cups or shells, moves the cups or shells around quickly, and asks an observer to guess which one the ball is under — often used figuratively to describe dishonest actions that are done to trick people