Crossword Genius

Ladies perhaps clean area (8)

Ross

I believe the answer is:

washroom

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

'ladies perhaps' is the definition.
I can't judge whether this defines the answer.

'clean area' is the wordplay.
'clean' becomes 'wash' (washing is a kind of cleaning).
'area' becomes 'room' (room is a kind of area).
'wash'+'room'='WASHROOM'

Can you help me to learn more?

(Other definitions for washroom that I've seen before include "bog across the pond" , "Where Americans go" , "US loo" , "Clean up place" .)

I've seen this clue in The Telegraph.
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