Jamb

The Jamb is directly around the wood door... apologies for the poor quality photograph!

Workshop of Pietro of Alberico, fragment of jamb with Telamon. Bologna, Cathedral of San Pietro. 12th century.

Workshop of Pitro of Alberico, fragment of jamb with vine motif filled with fantastic animals. Bologna, Cathedral of San Pietro. 12th century.

The side of an archway, door-opening, or window that, properly speaking, is load-bearing; generally used to describe the vertical linings of such architectural openings. (Michael Clarke)