Sam, who's belted a lot of officers (6)

I believe the answer is:

browne

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'sam' is the definition.
Both the answer and definition are singular nouns.
Maybe there's an association between them I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for browne that I've seen before include "Physician and author" , "Sam ---, military belt" .)

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