One taken in by very wise face (6)
I believe the answer is:
visage
'face' is the definition.
(visage is a kind of face)
'one taken in by very wise' is the wordplay.
'one' becomes 'i' (Roman numeral).
'taken in by' is an insertion indicator.
'very' becomes 'v' (abbreviation).
'wise' becomes 'sage' ('sage' can be similar in meaning to 'wise').
'v'+'sage'='vsage'
'i' going inside 'vsage' is 'VISAGE'.
(Other definitions for visage that I've seen before include "Face, aspect" , "Clock" , "A person's face, countenance" , "Mug" .)