/ Dictionary / Index M migraine: Meaning and Definition of Find definitions for: mi•graine Pronunciation: (mī'grān or, Brit., mē'-), [key] — n. an extremely severe paroxysmal headache, usually confined to one side of the head and often associated with nausea; hemicrania. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: migraine (Thesaurus) mignonne migrant Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language