fortnight
n. countablen. a period of two weeks. It is a common way to talk about time in British English.
n. a period of fourteen days or two weeks. Common in British and Commonwealth English; largely absent from North American usage.
We are going on holiday for a fortnight.
The project team meets every fortnight to discuss their progress and set new goals for the next two weeks.
The publication is released once a fortnight, allowing the editorial team sufficient time to conduct deep investigative research between issues.
From Middle English fourtenyght, fourtene nyght, from Old English fēowertīene niht (literally “fourteen nights"; the Anglo-Saxons counted by nights), equivalent to fourteen + night. Compare sennight.
Commonly used with the prepositions 'in' or 'for'.