Definitions for "Polychaete"
annelid or segmented worms that have flat extensions with stiff, sometimes sharp, bristles sticking outward from each body segment (Phylum Annelida, Class Polychaeta). Most marine worms are polychaetes.
a class of segmented marine worrns with bristles.
Segmented worms, including bloodworms and sea mice; of the Phylum Annelida