William is able to have a bushman's teapot (8)
I believe the answer is:
billycan
'a bushman's teapot' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'william is able to' is the wordplay.
'william' becomes 'Billy'.
'is able to' becomes 'can' (if you can do something you are able to do it).
'billy'+'can'='BILLYCAN'
'have' is the link.
Can you help me to learn more?
(Other definitions for billycan that I've seen before include "Cooking-pot" , "Outback kettle" , "Camping cookpot" , "Pot used on campfire" , "Tin container with lid to boil water outdoors" .)