fratress means A woman in charge of the furniture in a convent. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A woman in charge of the furniture in a convent.“On this occasion the abbess' kitchen had to provide each lady of the convent with half a goose, the two chantresses, as well as the four usual recipients, receiving doubles, and with a hen or a cock, the fratresses and the subprioress also receiving doubles.”