Informal verb meaning to take or provide an alcoholic drink before going to bed.
Synonyms
take a nightcap before bed
imbibe a nightcap
finish with a drink
cap the evening
top off the evening
have one last drink
take a final drink
have a final drink
take a nightcap
have a nightcap
Used attributively to describe items intended for use before sleep (e.g. ‘nightcap drink’).