缶詰

1. Origins, structure, and basic meaning

• Structure: 缶詰, read かんづめ, means canned food and, figuratively, being shut away in one place.
• Basic usage: It can name emergency food or appear in 宿に缶詰になる for staying confined at lodging to finish work.

2. Common pitfalls and similar expressions

• Canned food and being shut away
  • The literal sense is canned food kept for emergencies, while the figurative sense is shutting oneself away to work before a deadline. The second use is not food.