Crossword Genius

We hear a campanologist helps with the washing (7)

Ross

I believe the answer is:

wringer

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

'helps with the washing' is the definition.
I can't tell whether this definition defines the answer.

'we hear a campanologist' is the wordplay.
'we hear' indicates a 'sounds like' (homophone) clue.
'a campanologist' becomes 'ringer' (I've seen this before).
'ringer' sounds like 'WRINGER'.

Can you help me to learn more?

(Other definitions for wringer that I've seen before include "trouble when put through this?" , "Kitchen appliance" , "Old clothes dryer" , "A mangle" , "Old-fashioned clothes dryer" .)

I've seen this clue in The Globe and Mail.
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