Plural of groceryman; men who work in or own grocery businesses; male grocers.
From groceryman (grocer plus man) with the irregular plural -men. This shows how English preserved old plural patterns even as it modernized occupational language.
The word grocerymen is a relic — we don't really say this anymore because grocers can be any gender, but it reminds us that -men used to be the default occupational suffix!
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