The Collaborative International Dictionary of English v.0.48:
Mass'e \Mass['e]\, or Mass'e shot \Mass['e] shot\, n. (Billiards) A stroke made with the cue held vertically. [1913 Webster]WordNet (r) 3.0 (2006):
masse n 1: a shot in billiards made by hitting the cue ball with the cue held nearly vertically; the cue ball spins around another ball before hitting the object ball [syn: masse, masse shot]