Plural of coopery; multiple workshops or establishments where barrels and casks are made.
From 'coopery' + plural '-ies.' Coopery itself comes from 'cooper' + '-y' (a suffix indicating a place or craft workshop, as in 'bakery' or 'brewery').
In colonial America and medieval Europe, entire neighborhoods were organized around cooperies. A single town might have multiple cooperies, each producing thousands of barrels annually for storing grain, fish, beer, and wine—they were as essential to commerce as factories are today.
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