Parisian can work before I briefly return (9)

'parisian can work before i briefly return' is the definition.
I can't tell whether this definition defines the answer.

'work before i briefly return' is the wordplay.
'work' becomes 'toil' (toil is a kind of work).
'before' says to put letters next to each other.
'i' becomes 'setter' (the person that set this crossword).
'briefly' means to remove the last letter.
'return' says the letters should be written backwards.
'setter' with its final letter taken off is 'sette'.
'sette' written backwards gives 'ettes'.
'toil'+'ettes'='TOILETTES'

Can you help me to learn more?