nightcap

1. A warm cloth cap worn while sleeping, often with pajamas, being common attire in northern Europe before effective home heating became widespread.
2. A beverage drunk before bed that is usually alcoholic.
3. Something that a person reads or listens to before bed.
4. The final match of a sporting contest, especially the second game of a baseball doubleheader.
5. A cap drawn over the face of the condemned person before they are hanged.