John catches single by leader of Rolling Stones (5)
I believe the answer is:
cairn
'stones' is the definition.
(I've seen this before)
'john catches single by leader of rolling' is the wordplay.
'john' becomes 'can' (both can informally mean toilet).
'catches' indicates putting letters inside.
'single' becomes 'i' (one).
'by' is a charade indicator (letters next to each other).
'leader of' says to take the initial letters.
The first letter of 'rolling' is 'r'.
'i'+'r'='ir'
'can' going around 'ir' is 'CAIRN'.
(Other definitions for cairn that I've seen before include "Burial place of old" , "Rocky pile" , "Burial mound" , "Agree" , "Stone mound" .)