plural nightcaps
1
: a drink that you have just before you go to bed at night and that usually has alcohol in it
2
: a cloth cap that people used to wear in bed in the past
Cite this Entry
“Nightcap.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/nightcap. Accessed 20 Jun. 2026.
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