billiardthWiktionary 原文英美构词拆解billiardbilliard词干th-th后缀-th(no longer productive) forms nouns from verbs of action · (no longer productive except in some informal words) forms nouns of quality from adjectives词源说明From billiard + -th (ordinal suffix).释义形容词adjective1The ordinal form of the number one billiard.