gadfly
gadfly
(pl. -flies)
(pl. -flies)
- a fly that bites livestock, especially a horsefly, warble fly, or botfly
虻，牛虻（尤指马蝇、皮瘤蝇等）
■(figurative)an annoying person, especially one who provokes others into action by criticism
(喻)讨人厌者（尤指批评他人而促其行动的人）
- late 16th cent.: from gad, or obsolete gad 'goad, spike', from Old Norse gaddr, of Germanic origin; related to yard
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