A goat is able to provide a campfire container (8)
I believe the answer is:
billycan
'provide a campfire container' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'a goat is able' is the wordplay.
'a goat' becomes 'billy' (billy is a kind of goat).
'is able' becomes 'can' (if you can do something, you are able to do it).
'billy'+'can'='BILLYCAN'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for billycan that I've seen before include "Cooking-pot" , "Camping cookpot" , "Outback kettle" , "Tin container with lid to boil water outdoors" , "cylindrical pot" .)