what does Ornithogalum umbellatum mean?

ORNITHOGALUM UMBELLATUM as NOUN

Meaning
- common Old World herb having grasslike leaves and clusters of star-shaped white flowers with green stripes
- naturalized in the eastern United States
Synonym(s)
- sleepy dick (what does sleepy dick mean?)
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Hypernyms(s) Ornithogalum umbellatum is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
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