Other forms: doorframes
A doorframe is the wooden or metal border fixed around a doorway. The door itself hangs on it.
It is the part that stays when the door is taken off, and it carries the hinges on one side and the latch plate on the other. Builders call the vertical pieces jambs, the top the head and the bottom the threshold. Marking children's heights on one is a domestic tradition, which is why people photograph them before moving. British English writes it as one word or two.
1noundoorframeThe frame surrounding a doorway, to which the door is fixed.
“He leaned against the doorframe and waited.”
Also accepted in games: door frame
From door + frame.
Etymology from Wiktionary, CC BY-SA