1. Bluish-green-and-white North American swallow; nests in tree cavities
   - white-bellied swallow, Iridoprocne bicolor 
2. Of Australia and Polynesia; nests in tree cavities
   - tree martin, Hirundo nigricans

Derived forms: tree swallows

Type of: swallow

Part of: genus Hirundo, Hirundo

Encyclopedia: Tree swallow

• ironlike
• ironman
• ironmaster
• ironmonger
• ironmonger's shop
• ironmongery
• irons
• ironshod
• ironside
• Ironsides
• ironstone
• ironware
• ironweed
• ironwood
• ironwood tree
• ironwork
• ironworker
• eveningwear
• Evenk
• Evenki
• evenly
• evenness
• evensong
• event
• event horizon