Noah Webster
Nap
NAP, noun To lean, that is, to nod.
1. A short sleep or slumber.
NAP, verb intransitive
1. To have a short sleep; to be drowsy.
2. To be in a careless, secure state.
NAP, noun
1. The woolly or villous substance on the surface of cloth.
2. The downy or soft hairy substance on plants.
3. A knop.