box staple
noun (on a doorpost)
a socket for holding the end of a lock bolt when the door is closed.
Origin of box staple
First recorded in 1875–80
Words nearby box staple
box sill,
box social,
box spanner,
box spring,
box stall,
box staple,
box step,
box stoop,
box store,
box stretcher,
box the compass