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hare's-ear

noun

Definition of hare's-ear

plural hare's-ears
1 : a European annual herb (Bupleurum rotundifolium) with perfoliate leaves that resemble rabbit ears and small yellowish flowers
2 or less commonly hare's-ear mustard : a glabrous annual herb (Conringia orientalis) having sessile entire leaves with prominent basal lobes

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