Faculty I refer to in conversation (8)
I believe the answer is:
eyesight
'faculty' is the definition.
(eyesight is a kind of faculty)
'i refer to in conversation' is the wordplay.
'i' becomes 'eye' (I've seen this in other clues).
'refer to' becomes 'cite' ('cite' can be a synonym of 'refer to').
'in conversation' shows a homophone (sound like).
'cite' sounds like 'sight'.
'eye'+'sight'='EYESIGHT'
(Other definitions for eyesight that I've seen before include "What's needed to see" , "Power of vision" , "View" , "Power of seeing" , "Seeing ability" .)