COTTONWOOD Scrabble 16 Words With Friends 18 Definition noun any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed. noun American basswood of the Allegheny region. — synonyms: white_basswood, Tilia_heterophylla See all 48 words you can make from COTTONWOOD → 10-letter words Words starting with C Words ending with D ← Unscramble different letters