<p><strong>Noun:</strong></p><ul><li>Informal. an alcoholic drink taken at bedtime or at the end of a festive evening.</li><li>a cap for the head, intended primarily to be worn in bed.</li><li>Sports Informal. the last event of the program for the day, especially the second game of a doubleheader in baseball or the last race of the day in horse racing.</li></ul>