to move from one place to another; esp., to leave one's country and settle in another
to move from one region to another with the change in seasons, as many birds and some fishes do
to move from place to place to harvest seasonal crops
Origin:
< L migratus, pp. of migrare, to move from one place to another, change < IE *meigw-, to change location < base *mei-, to change, exchange, wander