D defs.my
Entry 1 sense Webster, 1913

migraine

/mī'grān/ · mi·graine · IPA /ˈmaɪɡɹeɪn/
01 n. A kind of intense sick or nervous headache, usually periodical and confined to one side of the head; called also migraine headache. Same a…
  1. 1.
    A kind of intense sick or nervous headache, usually periodical and confined to one side of the head; called also migraine headache. Same as megrim. Also: migraine headache See: megrim