ゴカイ類るいMeanings1nounbristle worm; polychaetecolloquialColloquial term for polychaete worms, often used by anglers and in everyday contexts. The formal scientific term is 多毛類 (たもうるい).See also: 多毛類釣つり餌えにゴカイ類るいを使つかう。I use bristle worms as fishing bait.