Dicky learnt duet in cleaner's (10)

I believe the answer is:

laundrette

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'cleaner's' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'dicky learnt duet' is the wordplay.
'dicky' is an anagram indicator (dicky can mean ill or non-functioning).
'learnt'+'duet'='learntduet'
'learntduet' is an anagram of 'LAUNDRETTE'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for laundrette that I've seen before include "Wash-room" , "Washing establishment" , "cleaning outfit" , "On film, mine was beautiful" .)

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