billiard /ˈbɪlɪəd/noun 3/ˈbɪl.i.ɑː(ɹ)d/ number 1forms 1 noun3 •[before a noun] Pertaining to the game of billiards. •A shot in billiards or snooker in which the cue ball strikes two other balls; a carom. •A dynamical system in which a particle alternates between motion in a straight line and specular reflections from a boundary. billiard /ˈbɪl.i.ɑː(ɹ)d/ number1 •(UK, rare) 10¹⁵, a thousand billion (long scale) or a million milliard. formsbilliards
