Crossword Genius

Where needles are kept just in case (4)

Ross

I believe the answer is:

etui

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'in case' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for etui that I've seen before include "Small ornamental case" , "Small case for sewing accessories" , "Case for holding sewing articles" , "Small case for small articles" , "Needlework case" .)

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