Word Study
    flanch
CIDE DICTIONARY
flanch, n. [Prov. E., a projection, OF. flanche flank. See Flank.]. 
                                            
                                         A flange.                                                                                 [1913 Webster]                                                                                                                                    
                                                                                    
                                                    " Flanches are always in pairs. A pair of flanches is considered one of the subordinaries."                                                                                            
                                                     [1913 Webster]                                                
                                                                                                                                                                OXFORD DICTIONARY
flanch, v.tr. & intr.  (also flaunch) (esp. with ref. to a chimney) slope inwards or cause to slope inwards towards the top.
                    Derivative
                        flanching n.
                                                                Etymology
                        perh. f. OF flanchir f.  flanche, flanc FLANK
                                    
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