Definition of hairstreak
: any of a subfamily (Theclinae of the family Lycaenidae) of small butterflies usually having striped markings on the underside of the wings and thin filamentous projections from the hind wings
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The Fulvous hairstreak, another brown butterfly that feeds on Brazilian pepper, is now showing up north of Melbourne.
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First Known Use of hairstreak
1815
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See words that rhyme with hairstreak Britannica.com: Encyclopedia article about hairstreak
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