Where to egg the Surrey team on (4)
I believe the answer is:
oval
'where' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'egg the surrey team on' is the wordplay.
'egg' becomes 'o' (an 'o' resembles an egg).
'the surrey team' becomes 'val' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' says to put letters next to each other.
'o'+'val'='OVAL'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for oval that I've seen before include "Test site" , "Elliptical - cricket ground" , "London cricket-ground" , "Squashed circle" , "Ellipse" .)