Original language I brought back I included (7)
I believe the answer is:
initial
'original' is the definition.
(thesaurus)
'language i brought back i included' is the wordplay.
'language' becomes 'latin' (Latin is an example**).
'brought back' shows that the letters should be reversed in order.
'included' means one lot of letters goes inside another.
'latin'+'i'='latini'
'latini' reversed gives 'inital'.
'inital' going around 'i' is 'INITIAL'.
(Other definitions for initial that I've seen before include "Start of name" , "Endorse" , "Word's first letter" , "Letter - opening" , "Introductory" .)