Crossword Genius

A plate holder (5)

Ross

I believe the answer is:

rivet

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This could be a double definition.

'a plate' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

'holder' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

Can you help me to learn more?

(Other definitions for rivet that I've seen before include "make fast" , "Metal bolt that's hammered" , "Completely engross; pin" , "Engross attention" , "Bolt for metal plates" .)

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