Skilled champ sliced shot taking on hole (12)
I believe the answer is:
accomplished
'skilled' is the definition.
(similar in meaning)
'champ sliced shot taking on hole' is the wordplay.
'shot' indicates an anagram.
'taking on' means one lot of letters goes inside another.
'hole' becomes 'O' (O looks like a hole).
'champ'+'sliced'='champsliced'
'champsliced' anagrammed gives 'accmplished'.
'accmplished' enclosing 'o' is 'ACCOMPLISHED'.
(Other definitions for accomplished that I've seen before include "Done - with a high degree of skill" , "Completed; skilful" , "Skilled; done" , "Professional" , "Highly proficient" .)