Not be mistaken with what most Westerners enjoy spreading on their breakfast toast, this jamb (note the silent “b” on the end) has a variety of meanings in the design world:
1. Most commonly, a jamb refers to the surrounding vertical element of a doorway or window frame. The door or window jamb acts as a stabilizing and finishing piece.
2. Similarly, the vertical element surrounding said door or window could be figurative, like a trumeau. In this case, they are referred to as jamb figures.
3. Lastly, a jamb hook is a very traditional support hook for a single firetool poker.
See also: trumeau