Crossword Genius

Receptacle of little colour, say (4)

Ross

I believe the answer is:

pail

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This clue might be a double definition.

'receptacle' is the first definition.
(thesaurus)

'little colour say' is the second definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for pail that I've seen before include "A bucket as for water" , "A bucket - the kind Jack and Jill used" , "Cylindrical vessel" , "Open-topped container" , "Kind of bucket - ask Jack and Jill" .)

I've seen this clue in The Mirror.
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