ORNITHOPTER /ˈɔː.nɪˌθɒp.tə/ ► audio Scrabble 16 Words With Friends 17 Definition noun heavier-than-air craft that is propelled by the flapping of wings. — synonyms: orthopter See all 352 words you can make from ORNITHOPTER → 11-letter words Words starting with O Words ending with R ← Unscramble different letters