Named old-fashioned, English symbol is included (10)
I believe the answer is:
designated
'named' is the definition.
(thesaurus)
'old-fashioned english symbol is included' is the wordplay.
'old fashioned' becomes 'dated' (I've seen this before).
'english' becomes 'E' (abbreviation).
'symbol' becomes 'sign' (I've seen this before).
'is included' indicates putting letters inside.
'e'+'sign'='esign'
'dated' placed around 'esign' is 'DESIGNATED'.
(Other definitions for designated that I've seen before include "Given a specific status" , "Nominated" .)