The definition of a fortnight is a two-week period of time.
(noun)Many British Commonwealth countries pay employees every two weeks, an example of a fortnight-based payroll system.
See fortnight in Webster's New World College Dictionary
noun
Origin: ME fourte(n) niht < OE feowertyn niht, lit., fourteen nights
See fortnight in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English fourtenight
Origin: , alteration of fourtene night, fourteen nights
Origin: : Old English fēowertēne, fourteen; see kwetwer- in Indo-European roots
Origin: + Old English niht, night; see nokwt- in Indo-European roots
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