割り箸

1. Origins, structure, and basic meaning

• Structure: 割り箸 is read as わりばし and is a noun for disposable wooden chopsticks made as a joined pair to split before use.
• Basic usage: Count one pair with 一膳, and describe an unused pair as 使わなかった割り箸.

2. Common pitfalls and similar expressions

• Contrast with general 箸
  • 箸 covers chopsticks in general, whether reusable or not; 割り箸 are disposable chopsticks joined before use and split into a pair.
• A pair split apart for use
  • They remain 割り箸 after being split, and 一膳 counts one pair rather than one wooden stick.