bird of passage

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. someone who leads a wandering unsettled life
• Syn:
wanderer, roamer, rover
• Derivationally related forms:
roam (for: roamer), wander (for: wanderer)
• Hypernyms:
traveler, traveller
• Hyponyms:
nomad, vagrant, drifter, floater, vagabond
2. any bird that migrates seasonally
• Hypernyms:
bird