Pleasant youth’s bottom pinched in recess (5)
I believe the answer is:
niche
'recess' is the definition.
(I know this)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for niche that I've seen before include "Small recess or cranny" , "Particularly well suited position" , "Special location" , "Recess in wall for statue" , "Cosy spot" .)