The most common and most likely answer to this crossword clue is the 7 letter word SLUMBER
I've seen this crossword clue in The Daily Telegraph
S
L
U
M
B
E
R
More clues leading to the result SLUMBER
- Move slowly and awkwardly following small sleep
- Where the poor live and suffer, without a chance to dream
- Sleep soundly at first like logs
- Drop off spades and planks
- After last of nightmares, refuse to sleep
- Fail to pay attention that’s small inconvenience
- Rest of junk below bottom of stairs
- Sleep in ghetto and live rough at first
- Rest spades on wood
- Doze, beginning to saw logs
Buddy explains!

The straight part
We know that "Sleep" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sleep = slumber.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SLUMBER mean?
SLUMBER noun- A very light state of sleep, almost awake.
- A state of ignorance or inaction.
- To be in a very light state of sleep, almost awake.
- To be inactive or negligent.
- To lay to sleep.
- To stun; to stupefy.