To go nap. To stake all the winnings on the cards in hand;
hence, to risk all on one venture. Nap is a game of cards; so called
from Napoleon III.
(A), a doze or short sleep, as “To take a nap,” is the
Anglo-Saxon hnæppian or hnapp-ian (to take a nap; the nap of
cloth is the Anglo-Saxon hnoppa.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Nap from Infoplease:
- nap: meaning and definitions - nap: Definition and Pronunciation
- Lajoie: meaning and definitions - Lajoie: Definition and Pronunciation
- Nap - Nap To go nap. To stake all the winnings on the cards in hand; hence, to risk all on one venture. ...
- Napping - Napping To catch one napping. To find a person unprepared or off his guard. (Anglo-Saxon, hnappung, ...
- Caught Napping - Caught Napping (To be). To suffer some disadvantage while off one's guard. Pheasants, hares, ...