D defs.my
Entry 1 sense Webster, 1913

Scaleback

· Scale·back · IPA
01 n. Any one of numerous species of marine annelids of the family Polynoidae, and allies, which have two rows of scales, or elytra, along the ba…
  1. 1.
    Any one of numerous species of marine annelids of the family Polynoidae, and allies, which have two rows of scales, or elytra, along the back. See Illust. under Chaetopoda.(Zool.) See: Chaetopoda