femerell means the lantern, louvre, or covering placed in the ridge of a hall roof for the purpose of ventilation or letting out the smoke of the fire kindled on a central hearth. Lexicurio rates it Sui generis — a strength score of 90 out of 100.
Etymology
Borrowed from Middle English fumerelle, from Old French fumeraille; ultimately derived from Latin fumus (“smoke”). Likely a doublet of fumarole.
noun
- The lantern, louvre, or covering placed in the ridge of a hall roof for the purpose of ventilation or letting out the smoke of the fire kindled on a central hearth.