泊まり

1. Origins, structure, and basic meaning

• Structure: 泊まり, read とまり, denotes an overnight stay or arrangement that is not completed as a day trip.
• Basic usage: It refers to sleeping at a friend’s home and to a business trip that requires an overnight stay.

2. Common pitfalls and similar expressions

• An overnight arrangement
  • The focus is an arrangement involving a night away, contrasted with 日帰り, rather than the lodging building itself.