"Get some shut eye" is an idiom commonly used to imply sleeping or taking a nap. There are several synonyms that can be used interchangeably with this phrase. Some examples include "catch some Z's," "hit the hay," "take a snooze," "rest one's eyes," "slumber," or "catnap." These phrases are often used to describe the action of getting some much-needed sleep, whether it be a short or extended period of time. Regardless of which phrase you use, the end goal remains the same - to rest and recharge so that you can wake up feeling refreshed and ready to tackle the day ahead.