Webster's Revised Unabridged Dictionary · 1913

Migratory

Migratory , adjective

[Compare French 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.
Collocations (2)
Migratory locust (Zoology) , See Locust.
Migratory thrush (Zoology) , the American robin. See Robin.