fortnight

Definitions

(Noun) 14days, 2weeks

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(Noun) two weeks

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(Noun) two weeks.

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(Noun) 2 weeks

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(Noun) This is equal to 14 days. (2 weeks)

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(Noun) Two weeks. Perfectly correct American usage, though using it in certain situations (e.g., an office but not a university) might stop a conversation cold. (More typically British usage.)