戸締まり

1. Origins, structure, and basic meaning

• Structure: 戸締まり (とじまり) means securing doors and windows against entry. 戸締まりを確認する checks completion; 戸締まりを担当する assigns responsibility.
• Basic usage: Window locks are checked before going out, and the last employee leaving is responsible for securing the premises.

2. Common pitfalls and similar expressions

• Checking locked status and bearing locking responsibility
  • The first object is an action whose completion is verified; the second is an assigned duty. The noun denotes the security procedure, not a door itself.