Definition of hairstreak in English:

hairstreak

Syllabification: hair·streak
Pronunciation: /ˈherstrēk
 
/

noun

A butterfly with a narrow streak or row of dots on the underside of the hind wing and a small taillike projection on the hind wing.
  • Many genera in the family Lycaenidae
More example sentences
  • The leaves serve as host for the larvae of two butterflies, the white hairstreak and the brown duskywing.
  • It is hoped that birds such as the lapwing, skylark and redshank will increasingly use the sites as well as butterflies such as the green hairstreak.
  • Trees stabilize the ecosystem for butterflies like the great purple hairstreak.

Definition of hairstreak in:

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Word of the day neoteny
Pronunciation: nēˈätn-ē
noun
retention of juvenile features in the adult animal