First responders disrupted a bride in terrible grief (4,7)
I believe the answer is:
fire brigade
'first' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for fire brigade that I've seen before include "Blaze tacklers" , "rescuers" , "9a 19d" , "Organised group to combat conflagrations" .)