"bluebells" in the noun sense
1. wild hyacinth, wood hyacinth, bluebell, harebell, Hyacinthoides nonscripta, Scilla nonscripta
sometimes placed in genus Scilla
2. 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
3. harebell, bluebell, Campanula rotundifolia
perennial of northern hemisphere with slender stems and bell-shaped blue flowers
Source: WordNet® (An amazing lexical database of English)
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