ASTRAGAL • FREE-TRANSLATOR.COM • Definition of Astragal

... for the Plinth, marked I; that above, marked K, is for the Thorus, and for the Conge or Apophygis. BB is the Capital, which height is equal to its Base: It's divided into three; the first marked L, is for the Gorge, with the Conge and the Astragal; the second, marked M, is for the Echinus or quarter-round; the third, marked N, is for the Plinthus or Abacus, called by the French Tallor. C is one of the Faces of the Sabliers which serve instead of an Architrave. EE is the under ...

— An Abridgment of the Architecture of Vitruvius - Containing a System of the Whole Works of that Author • Vitruvius