Sit a spell (4)
I believe the answer is:
rest
'sit a spell' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rest that I've seen before include "Take a breather - (the) others" , "Take one's ease" , "Change is as good as this, they say" , "Freedom from activity" , "Support for putting things on" .)