Fleshed out feature found in Dublin "Echo" (6,4)
I believe the answer is:
double chin
'fleshed out feature' is the definition.
(fleshy feature of face)
'found in dublin echo' is the wordplay.
'found in' is an anagram indicator.
'dublin'+'echo'='dublinecho'
'dublinecho' with letters rearranged gives 'DOUBLE-CHIN'.
(Other definitions for double chin that I've seen before include "Sign of obesity" , "flabby feature" , "Unattractive feature" , "Facial feature of chubbier persons" .)