School taken in, by the sound of it (4)
I believe the answer is:
eton
'school' is the definition.
(famous UK public school)
'taken in by the sound of it' is the wordplay.
'taken in' becomes 'eaten' (take in can mean to eat).
'by the sound of it' indicates a 'sounds like' (homophone) clue.
'eaten' is a homophone of 'ETON'.
(Other definitions for eton that I've seen before include "Easy to understand" , "College, collar or crop" , "Public school (sounds like 20)" , "British public school of note" , "Collar - crop - jacket - school" .)