Aquatic centre has space for a billiard parlour (8)

'aquatic centre' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

'space for a billiard parlour' is the wordplay.
'space' becomes 'room' (enough space or room to do something).
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'a billiard parlour' becomes 'pool' (I can't explain this - if you can you should believe this answer much more).
'room' after 'pool' is 'POOLROOM'.

'has' acts as a link.

Can you help me to learn more?