noun Etymology: Middle English, from Old English gnætt; akin to Old English gnagan to gnaw Date: before 12th century any of various small usually biting dipteran flies, ~ty adjective
GNAT
Meaning of GNAT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012