Rock to the right (3)
I believe the answer is:
tor
'rock' is the definition.
(a tor is a rocky peak)
'to the right' is the wordplay.
'the right' becomes 'r' (common abbreviation).
'to'+'r'='TOR'
(Other definitions for tor that I've seen before include "Rot on a Cornish hill" , "Rocky height, eg Mam" , "It rises" , "Hill or rocky peak" , "Pillar of rock" .)