It’s a bath adapted for such dwellings (8)
I believe the answer is:
habitats
'dwellings' is the definition.
(I know this)
'it's a bath adapted' is the wordplay.
'adapted' indicates anagramming the letters.
'its'+'a'+'bath'='itsabath'
'itsabath' is an anagram of 'HABITATS'.
'for such' is the link.
(Other definitions for habitats that I've seen before include "Natural environments of organisms" , "Natural environments of animals or people" .)