A short nap is referred to as 40 winks.
40
Forty
40 winks is an expression. It refers to a short nap.
It's a nap. Some people refer to them as catnaps if they are really really short, but the more common word in just nap.
It is just a short, light sleep, a cat nap or a snooze
A short nap typically lasts around 10 to 30 minutes, which would translate to about 15 to 90 minutes of sleep cycles. In this time, a person may experience around 1-2 cycles of rapid eye movement (REM) sleep, where dreams occur and the eyes may exhibit movements similar to winking. Thus, it's possible to have a few "winks" during a short nap.
It's slang for a nap or short sleep - as if you were just winking your eyes instead of sleeping.
A person that didn't sleep a wink is someone who got almost no sleep at all, and to catch 40 winks is to catch a very brief but refreshing nap. The number 40 has a wide range of citations in the Bible and may have some application to this expression.
The term 'catch 40 winks' means catching 40 minutes of sleep (a nap.)
40 Winks is a Quick Nap
If someone says the phrase "I think I'll snatch a few winks, it means that the person is going to have a quick nap or snooze.
Never heard of that one, but we say "take forty winks" to mean have a little nap.