doorpost
nounUK /ˈdɔːpəʊst/
US /ˈdɔːrpoʊst/
A doorpost is the upright piece of wood or metal on either side of a door.
She leaned against the doorpost and waited for him to open the door.
OTHER MEANINGS
2. Either of the two vertical sides of a doorway, considered together as a frame.
The old doorposts were carved with small flowers.
3. A symbolic marker placed on a doorway in some cultures, as in the mezuzah.
He touched the doorpost as he walked into the house.
4. A structural support at the entrance of a building or room.
The doorpost had rotted, so the whole frame needed replacing.