hummingbird : Idioms & Phrases
hummingbird moth
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noun any of various moths with long narrow forewings capable of powerful flight and hovering over flowers to feed
hawk moth; hawkmoth; sphinx moth; sphingid.
WordNet
vegetable hummingbird
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noun a softwood tree with lax racemes of usually red or pink flowers; tropical Australia and Asia; naturalized in southern Florida and West Indies
Sesbania grandiflora; scarlet wisteria tree.