2. (noun)prairie gentian, tulip gentian, bluebell, Eustoma grandiflorum one of the most handsome prairie wildflowers having large erect bell-shaped bluish flowers; of moist places in prairies and fields from eastern Colorado and Nebraska south to New Mexico and Texas Synonyms: bluebell, prairiegentian, woodhyacinth, tulipgentian, wildhyacinth, harebell