fumerale
[cf. AN fumerel]
, smoke-vent, louver.V. et.fumerellum.
1311super quodam ~e super cameram clericiKR Ac469/13 m. 4; 1339carpentario operanti super femorale magne auleIb.470/6 m. 1; 1365in ~e aule castriIb.544/31 m. 4d.; CathA (v. 1 fumarium).