n.
Pronunciation: ' m ī - ˌ gr ā n, Brit often ' m ē -
Function: noun
Etymology: Middle English mygreyn, from Middle French migraine, modification of Late Latin hemicrania pain in one side of the head, from Greek h ē mikrania, from h ē mi- hemi- + kranion cranium
Date: 15th century
1 : a condition marked by recurrent severe headache often with nausea and vomiting
2 : an episode or attack of migraine
– mi · grain · ous \ - ˌ gr ā -n ə s \ adjective