A toilet powder (6)

I believe the answer is:

talcum

'a toilet powder' is the definition.
(talcum is a kind of toilet powder)

This is the entire clue.

(Other definitions for talcum that I've seen before include "Dusting powder" , "Scented toilet powder" , "Standard body powder" , "Kind of powder" , "Perfumed powder" .)

I've seen this clue in The Irish Times.

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