sea cow Meaning, Definition & Usage

  1. noun any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs
    sirenian; sirenian mammal.

WordNet

Sea" cow`
Definitions
  1. (Zoöl.) (a) The mantee. (b) The dugong. (c) The walrus.

Webster 1913