The height of joy, covering English victory (9)
I believe the answer is:
elevation
'the height' is the definition.
(thesaurus)
'joy covering english victory' is the wordplay.
'joy' becomes 'elation' (elation is a kind of joy**).
'covering' is an insertion indicator.
'english' becomes 'e' (abbreviation).
'victory' becomes 'v'.
'e'+'v'='ev'
'elation' enclosing 'ev' is 'ELEVATION'.
'of' is the link.
(Other definitions for elevation that I've seen before include "Diagram" , "Leave it on for altitude of a place" , "Grandeur" , "Height above sea level" , "plan" .)