A kind of coarse narrow cloth, woven from long wool and usually ribbed. It is thought to derive from Kersey in Suffolk but that has not yet been proved (OED).
A cauldron or other vessel made of some kind of metal, used for boiling water or other liquids over a fire. Such vessels could be of considerable size.
A hair cloth on which grain was laid in a drying kiln. It had other uses and was often linked with ‘steep fat’ in inventories, which might suggest a role in brewing.