We found 2 dictionaries that define the word flightless birds:

General (2 matching dictionaries)

1. flightless birds: Vocabulary.com
2. Flightless birds: Wikipedia, the Free Encyclopedia

(Note: See flightless_bird as well.)

Definitions from Wikipedia (Flightless bird) ▸ noun:  Flightless birds are birds that cannot fly. ▸ Also see flightless_bird Opposite: flying birds, volant birds, avian Phrases: large flightless birds, south american flightless birds, more... ▸ Words similar to flightless birds ▸ Usage examples for flightless birds ▸ Idioms related to flightless birds ▸ Wikipedia articles (New!) ▸ Words that often appear near flightless birds ▸ Rhymes of flightless birds ▸ Invented words related to flightless birds