Plural form of 'ewery'; rooms, closets, or storage spaces used for keeping ewers and related table service equipment.
From 'ewery' (a room for ewer storage) plus the plural '-ies' suffix. In medieval households, this referred to specific dedicated storage areas.
The fact that there was a word for 'ewer storage rooms' shows how elaborate medieval household organization was—every object had its designated place and room, a level of compartmentalization we've mostly lost.
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