Select the most appropriate meaning of the given idiom.

Forty winks

A short nap during the day

The most appropriate meaning of the idiom "forty winks" is a short nap during the day.

This idiom is used to describe a short period of sleep, typically lasting for 20-30 minutes. It is thought to come from the idea that 40 winks is the number of times that an average person blinks in a minute.

The other options are not as accurate descriptions of the meaning of the idiom.

• To blink repeatedly: This is not an idiom.
• To keep awake: This means to stay awake.
• A sound sleep at night: This means a long, restful sleep.