Cosy here in the end (3)
I believe the answer is:
den
'cosy here in' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'end' is the wordplay.
'end' can be anagrammed to 'DEN'.
But, I'm unsure how this is indicated.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for den that I've seen before include "Habitation of wild animals (3)" , "Home of the beast" , "Animal lair or gent's study" , "Animal's home or gent's study" , "Wild animal's lair" .)