Dorm overseers, for short (3)
I believe the answer is:
ras
'dorm overseers for short' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ras that I've seen before include "headland" , "Abyssinian prince" , "Ethiopian prince" , "Ethiopian king's title" , "prince from Ethiopia" .)