Revenue vessel? (3)
I believe the answer is:
vat
This might be a double definition.
'revenue' is the first definition.
The answer and definition can be both related to property as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'vessel?' is the second definition.
(vat is a kind of vessel)
Can you help me to learn more?
(Other definitions for vat that I've seen before include "Large tank for liquids, or kind of tax" , "Large tub; tax" , "Tank for holding liquids" , "Large barrel" , "A tax on a large container?" .)