megrim

n. [ OE. migrim, migrene, F. migraine, LL. hemigrania, L. hemicrania, hemicranium, Gr. &unr_;; &unr_;- half + &unr_; skull. See Hemi- and Cranium, and cf. Hemicrania, Migraine. ] 1. A kind of sick or nervous headache, usually periodical and confined to one side of the head; now more commonly called migraine headache or migraine. [ 1913 Webster +PJC ]

2. A fancy; a whim; a freak; a humor; esp., in the plural, lowness of spirits. [ 1913 Webster ]

These are his megrims, firks, and melancholies. Ford. [ 1913 Webster ]

3. pl. (Far.) A sudden vertigo in a horse, succeeded sometimes by unconsciousness, produced by an excess of blood in the brain; a mild form of apoplexy. Youatt. [ 1913 Webster ]