Teachers' fill-ins, for short (4)
I believe the answer is:
subs
(Other definitions for subs that I've seen before include "Underwater vessels (abbr)" , "Players in reserve" , "Club members' payments" , "Reserves at football (sl.)" , "vehicles" .)
I believe the answer is:
subs
(Other definitions for subs that I've seen before include "Underwater vessels (abbr)" , "Players in reserve" , "Club members' payments" , "Reserves at football (sl.)" , "vehicles" .)