Definition of fortnight
: a period of 14 days : two weeks They stayed with us for a fortnight.
Examples of fortnight in a sentence
They stayed with us for a fortnight.
Origin and Etymology of fortnight
Middle English fourtenight, alteration of fourtene night, from Old English fēowertȳne niht fourteen nights
First Known Use: before 12th century
FORTNIGHT Defined for English Language Learners
Definition of fortnight for English Language Learners
: a period of 14 days : two weeks
FORTNIGHT Defined for Kids
Definition of fortnight for Students
: two weeks
Seen and Heard
What made you want to look up fortnight? Please tell us where you read or heard it (including the quote, if possible).