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Definition of nightcap

nightcap

/ˈnaɪtˌkæp/
night · cap

Plural:nightcaps
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nightcap Lexical Profile

nightcap Game Scores & Validity

• noun

1

An alcoholic or warm beverage consumed shortly before going to bed.

Example

"After the dinner party ended, the hosts offered their guests a quiet nightcap by the fireplace."


2

A soft, warm cloth cap historically worn in bed to keep the head warm while sleeping.

Example

"In the nineteenth-century illustration, the elderly gentleman wore a flannel gown and a pointed white nightcap."


3

North American The final game or race of a day's sporting event, especially the second game of a baseball doubleheader.

Example

"After losing the afternoon opener, the home team rallied to win the nightcap in extra innings."

• Rhymes for nightcap

Word Origin & Etymology

Formed in Middle English as a compound of 'night' and 'cap', originally denoting a warm cloth cap worn in bed before central heating existed. The sense of a bedtime alcoholic drink emerged in the early 19th century as a playful metaphor for the last item put on before going to sleep.

Cite this Entry


Wordmom. (2026). Definition of Nightcap. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/nightcap
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