Natural drinking place at bottom of terrace (6)
I believe the answer is:
innate
'natural' is the definition.
(I've seen this before)
'drinking place at bottom of terrace' is the wordplay.
'drinking place' becomes 'inn'.
'bottom of' says to take the final letters.
The last letter of 'terrace' is 'e'.
'inn'+'at'+'e'='INNATE'
(Other definitions for innate that I've seen before include "Inherent, natural" , "quite natural" , "Born" , "Bred in the bone, one might say" , "Present from birth" .)