Goblet

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late Middle English: from Old French gobelet, diminutive of gobel ‘cup’, of unknown origin.

wiktionary

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From Middle English goblet (= Middle Low German gobelet, kobelet(“goblet”)), from Old French gobellet, diminutive of gobel, from or related to the verb gober(“to ingest”).

etymonline

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goblet (n.)

large, handle-less, crater-shaped drinking vessel for wine, etc.," late 14c., from Old French gobelet "goblet, cup" (13c.), diminutive of gobel "cup," probably related to gobe "gulp down" (see gob).