1. 
   Femerell
   Fem'er·ell noun [ Old French fumeraille part of a chimney. See Fume .] (Architecture) A lantern, or louver covering, placed on a roof, for ventilation or escape of smoke.
   Found op http://www.encyclo.co.uk/webster/F/18
   
   
2. 
   Femerell
   • (n.) A lantern, or louver covering, placed on a roof, for ventilation or escape of smoke.
   Found op http://thinkexist.com/dictionary/meaning/femerell/
   
   
3. 
   Femerell
   In architecture a femerell is a lantern, or louvre covering, placed on a roof, for ventilation or the escape of smoke.
   Found op http://www.probertencyclopaedia.com/browse/TF.HTM
   
   

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