Spot for a stud (3)
I believe the answer is:
ear
'spot for a stud' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ear that I've seen before include "Discernment musicians need" , "That makes sense" , "Sense organ" , "Seed-bearing part of corn" , "Organ involved with balance" .)