doorjamb
nounUK /ˈdɔː.dʒæm/
US /ˈdɔːr.dʒæm/
The side of a door frame that the door closes against.
She leaned against the doorjamb while waiting for him to answer.
OTHER MEANINGS
2. The vertical piece of wood or metal on either side of a doorway.
He painted the doorjamb white to match the trim.
3. A structural support that holds a door in place.
The old doorjamb was warped and needed replacing.
4. The part of a door frame where the lock strikes.
The key got stuck in the doorjamb.