Crossword Genius

It conceals the seamy side of our habits (6)

Ross

I believe the answer is:

lining

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'it conceals the seamy side of our habits' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for lining that I've seen before include "Inner protection" , "Jerome Kern song: 'Look for the silver . . . . . . '" , "Inner part of a coat" , "Material on the inside surface" , "padding" .)

I've seen this clue in The Globe and Mail.
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