- nightcap - an alcoholic drink taken at bedtime; often alcoholic
--1 is a kind of drink
- nightcap - a cloth cap worn in bed
--2 is a kind of cap
--2 is a part of nightclothes, nightwear- nightcap - the final game of a double header
--3 is a kind of game
--3 is a part of twin bill, doubleheader, double feature - nightcap - a cloth cap worn in bed