THUNDERBIRD /ˈθʌndə.bɜːd/ Scrabble 18 Words With Friends 20 Scrabble letter values: T1H4U1N1D2E1R1B3I1R1D2 = 18 Definition noun (mythology) the spirit of thunder and lightning believed by some Native Americans to take the shape of a great bird. See all 357 words you can make from THUNDERBIRD → 11-letter words Words starting with T Words ending with D ← Unscramble different letters