Wiktionary
n. A metal plate affixed to a door jamb that holds the door closed when the door bolt is extended into a hole, protecting the jamb against friction from the bolt.
Wikipedia
A strike plate is a metal plate affixed to a doorjamb with a hole or holes for the bolt of the door. When the door is closed, the bolt extends into the hole in the strike plate and holds the door closed. The strike plate protects the jamb against friction from the bolt and increases security in the case of a jamb made of a softer material (such as wood) than the strike plate. A plate on the lockset itself (on the door, not the jamb) is instead called a face plate.
Some strike plates have their hole size and placement calculated so a spring-bolt extends into the hole, but an adjacent anti-retraction device remains depressed, preventing the bolt from being retracted unless the lock is turned.
Usage examples of "strike plate".
Cocobolo wood for the riser, leather covering for the arrow shelf and the strike plate, antelope horn for the tips.
And where the angle faces the outside, the strike plate resists the insertion of even the most flexible object.
She shone her light on a smalf indented impression in the strike plate and edge of the wooden frame where it appeared someone had tried to pry open the door.
As the latch engaged against the strike plate, Sean stretched out on his bed.
The door opening was lined with another piece of trim, a doorjamb with a little brass strike plate about halfway up where the latch of the door would catch.
There were two small glass vials, that much he could see, and the strike plate and wick were in between them.
Now the latch lever didn't fully meet the strike plate, so that any locking capacity was strictly illusory.
I unwrapped the towel, pulled out a short steel pry-bar, pried the door back enough that we could force the lock-tongue across the strike plate.