The word for today is…
jamb (noun):
1 : an upright piece or surface forming the side of an opening (as for a door, window, or fireplace)
2 : a projecting columnar part or mass
Source : Merriam -Webster
Etymology : Middle English jambe, borrowed from Anglo-French jambe, gaunbe “side post of a door or window,” literally, “leg,” going back to Late Latin gamba, camba “hock or upper leg of a horse,” borrowed from Greek kamp? “bend, flexion of a limb,” probably going back to a European substratal base kamp-, whence also perhaps Lithuanian kam?pas “corner, hidden place,” Latvian kampis “curved piece of wood, kettle hook,” Gothic hamfs “maimed”
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