Harry Kane to describe cup holder’s state (8)
I believe the answer is:
nebraska
'state' is the definition.
(I know that Nebraska is a state)
'harry kane to describe cup holder's' is the wordplay.
'harry' indicates anagramming the letters (harry can mean to attack or spoil).
'to describe' means one lot of letters goes inside another.
'cup holder's' becomes 'bras' (I can't justify this - if you can you should believe this answer much more).
'kane' anagrammed gives 'neka'.
'neka' enclosing 'bras' is 'NEBRASKA'.
Can you help me to learn more?
(Other definitions for nebraska that I've seen before include "Midwest state - Springsteen album" , "location of Lincoln" , "State N. of Kansas" , "State of central USA" , "American state, capital Lincoln" .)