Crossword Genius

One might take cue here and add water feature to anteroom (8)

Ross

I believe the answer is:

poolhall

I'm a little stuck... Click here to teach me more about this clue!

'one might take cue here and add water feature' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'to anteroom' is the wordplay.
'to' becomes 'pool' (I can't justify this - if you can you should believe this answer much more).
'anteroom' becomes 'hall' (synonyms).
'pool'+'hall'='POOLHALL'

Can you help me to learn more?

I've seen this clue in The Irish Times.
Want a hint initially instead of a full solution? Install my app