From nightspot, ejects black cats (7)

I believe the answer is:

bounces

'from nightspot ejects' is the definition.
(what a bouncer does)

'black cats' is the wordplay.
'black' becomes 'b' (as in pencil classifications).
'cats' becomes 'ounces' (ounce is a kind of cat).
'b'+'ounces'='BOUNCES'

I've seen this clue in The Guardian.

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