n. flat, coarse bread used in place of plates "Grains were ground into flower at the lord's mill, and baked into trenchers and other breads."
n. worker who brought and heated water for the nobles "The ewerer tasted the water before he poured it in the king's hands."
n. a person bound under the feudal system to work on his lord's estate "The serfs lived in huts provided for them on the lord's estate, each with its own plot of land."