What does sack mean in regards to sleep?


When talking about sleeping, "sack" means "bed" (e.g., "I'm tired and going to hit the sack"). It is a common term you may see or hear people use online, in messages, and in person.

For example, your friend may be tired from a full day of work and text you, "I'm not gonna make it tonight, gonna hit the sack. Or, your dad may greet you in the morning, "11 am? Must have been hard to get out of the sack today."

Origin of sack

It is unclear who first coined the term, but it dates back to at least the 19th century when people would sleep on mattresses that were sacks filled with hay. This is also where the saying "hit the hay" comes from (hay in the sack).


Alright, I'm gonna hop in the sack. I'm tired. TTYL!
Hitting the sack tweet
Hitting the sack tweet

Related Slang


Updated March 13, 2023

Sack definition by

This page explains what the slang term "Sack" means. The definition, example, and related terms listed above have been written and compiled by the team.

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