noun Etymology: Middle English fourtenight, alteration of fourtene night, from Old English fēowertȳne niht fourteen nights Date: before 12th century a period of 14 days ; two weeks
FORTNIGHT
Meaning of FORTNIGHT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012