D defs.my
Entry 2 senses Webster, 1913

Leviathan

/(lē̇*vī"ȧ*than)/ · Le·vi·a·than · IPA /ləˈvaɪəθ(ə)n/
01 n. An aquatic animal, described in the book of Job, ch. xli., and mentioned in other passages of Scripture.
  1. 1.
    An aquatic animal, described in the book of Job, ch. xli., and mentioned in other passages of Scripture.
  2. 2.
    The whale, or a great whale.