1. North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls
   - Hirundo pyrrhonota

Derived forms: cliff swallows

Type of: swallow

Part of: genus Hirundo, Hirundo

Encyclopedia: Cliff swallow

• two-spotted ladybug
• two-step
• two-stroke
• two-thirds
• two-tier bid
• two-time
• two-timer
• two-timing
• two-toe
• two-toed
• two-toed anteater
• two-toed sloth
• two-tone
• two-up
• two-way
• two-way street
• two-wheel
• two-wheeled
• two-wing flying fish
• two-winged insects
• two-year
• two-year-old
• two-year-old horse
• twofer
• twofold