Take a rest, possibly being idle now (3,4)
I believe the answer is:
lie down
'take a rest' is the definition.
(I've seen this before)
'being idle now' is the wordplay.
'idle now' anagrams to 'LIE DOWN'.
Though, I am not sure how this is indicated.
'possibly' is the link.
Can you help me to learn more?
(Other definitions for lie down that I've seen before include "Recline" , "Take rest; be submissive (under)" , "Enid Low (anag.)" , "Short rest on a bed" , "Assume a reclining position" .)