[ hair-streek ]
/ ˈhɛərˌstrik /
any small, dark butterfly of the family Lycaenidae, having hairlike tails on the hind wings.
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British Dictionary definitions for hairstreak
/ (ˈhɛəˌstriːk) /
any small butterfly of the genus Callophrys and related genera, having fringed wings marked with narrow white streaks: family Lycaenidae
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012