The most common and most likely answer to this crossword clue is the 8 letter word LIE-DOWN
L
I
E
-
D
O
W
N
Buddy explains!
The straight part
We know that "a little rest" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a little rest = lie-down.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 LIE-DOWN mean?
LIE-DOWN noun- A short period of rest while lying.