D defs.my
Entry 2 senses Webster, 1913

Sea serpent

/sē sẽrp'-ənt/ · Sea· ser·pent · IPA
01 Any marine snake. See Sea snake.
  1. 1.
    Any marine snake. See Sea snake.(Zool.) See: Sea snake
  2. 2.
    A large marine animal of unknown nature, often reported to have been seen at sea, but never yet captured.(Zool.)