Throw about to get wicket? (4)
I believe the answer is:
bowl
'throw' is the definition.
(I know that bowl is a more specific form of the action cast)
'to get wicket?' is the wordplay.
'to' becomes 'bol' (I can't justify this - if you can you should give a lot more credence to this answer).
'get' is an insertion indicator.
'wicket?' becomes 'w'.
'bol' enclosing 'w' is 'BOWL'.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for bowl that I've seen before include "Basin; wooden ball" , "Greatly surprise" , "See 20" , "Soup dish - roll a ball" , "Round deep dish" .)