from the GNU version of the Collaborative International Dictionary of English
- n. A taking by surprise; an unexpected onset or attack.
from The Century Dictionary and Cyclopedia
- n. A taking by surprise, as when one is not on his guard; an unexpected onset when one is unprepared.
Sorry, no etymologies found.
Recently another study showed how meditators often fared better than their nap-taking counterparts in mitigating the effects of sleep deprivation.
I think for most people who think of Churchill as being sort of a roly-poly, cigar-smoking, nap-taking drinker, the idea that he was a polo champion was sort of surprising.