The term 'Tricky Billiard Shot' refers to a shot in the game of billiards that requires a high level of skill and precision. The crossword solution for this term is 'Masse, ' which is a type of shot in billiards where the cue ball is hit with a raised cue stick, causing it to spin and curve around an obstacle before hitting the target ball. This shot is considered to be one of the most difficult shots to execute in billiards, and is often used by experienced players to gain an advantage over their opponents.