腫れ物

1. Origins, structure, and basic meaning

• Structure: 腫れ物 is read as はれもの and means “swelling” and “delicate subject”.
• Basic usage: It denotes a swelling on a boy’s arm and the figurative treatment of an angry person as highly delicate.

2. Common pitfalls and similar expressions

• 腕の腫れ物 / 腫れ物に触るように扱う
  • 腕の腫れ物 is a physical lesion, while 腫れ物に触るように扱う is an idiom for handling someone with extreme caution.