折り畳み傘

1. Origins, structure, and basic meaning

• Structure: Written 折り畳み傘 and read おりたたみがさ, it is an umbrella whose shaft and ribs fold into a compact form for carrying.
• Basic usage: It is kept lightly in a bag and becomes useful when rain begins unexpectedly.

2. Common pitfalls and similar expressions

• Compact storage versus open use
  • Its defining feature is portability when folded; it functions as a normal umbrella once opened.