An architectural term, possibly referring to a type of opening, window, or decorative element in a building or fortification; a variant of 'femerell.'
From Old French 'fumeral' or 'fumerelle,' possibly derived from Latin 'fumariolum' (small smoke-hole) or related to 'fumer' (to smoke). This term appears in medieval architecture literature.
Many architectural terms come from French because Normans built so many castles and cathedrals in medieval England that French became the language of construction—femereil and its variants survive as technical terms in medieval building studies.
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