靴くつ摺ずり

noun

door sill; threshold plate

Refers to the bottom horizontal part of a door frame, often a raised strip or plate that the door closes against. A somewhat specialized architectural term.

• 玄げん関かんの靴くつ摺ずりが傷いたんできたので、新あたらしいものに交こう換かんした。

  The door sill at the entrance was getting worn, so I replaced it with a new one.