Kay loses the head with Herb in the doghouse (6)
I believe the answer is:
kennel
'doghouse' is the definition.
('kennel' can be a synonym of 'doghouse')
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for kennel that I've seen before include "Dog's shelter" , "Dog's abode" , "Dog house" , "housing for boxer, say" , "Doghouse" .)