Scaleback

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Scaleback \Scale"back`\, n. (Zool.)
     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}.
     [1913 Webster]