Flower-of-an-hour
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The plant Hibiscus trionum
- 2 annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America wordnet
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.