Terrible overreactions in the players' training area (13)
I believe the answer is:
conservatoire
'the players' training area' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'terrible overreactions' is the wordplay.
'terrible' is an anagram indicator.
'overreactions' with letters rearranged gives 'CONSERVATOIRE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for conservatoire that I've seen before include "School of note" , "School of music" , "Music college" , "College of arts" .)