Migratory \Mi"gra*to*ry\, a. [Cf. F. migratoire.] 1. Removing regularly or occasionally from one region or climate to another; as, migratory birds. 2. Hence, roving; wandering; nomad; as, migratory habits; a migratory life. {Migratory locust} (Zo["o]l.) See {Locust}. {Migratory thrush} (Zo["o]l.), the American robin. See {Robin}.