As played by Hank and a master? (5)
I believe the answer is:
halma
'as' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'played by hank and a master?' is the wordplay.
'played by hank' becomes 'hal' (I can't explain this - if you can you should believe this answer much more).
'and' means one lot of letters go next to another.
'a master?' becomes 'MA' (Master of Arts).
'hal'+'ma'='HALMA'
Can you help me to learn more?
(Other definitions for halma that I've seen before include "Leaping board game" , "Board-game" , "played on board" , "Hopping board game" , "Old board game" .)