枕木

1. Origins, structure, and basic meaning

• Structure: Spelling: 枕木. Reading: まくらぎ. Core meaning: railroad tie; sleeper.
• Basic usage: Representative examples: 鉄道資料館で古い枕木の断面を観察した / 模型の線路に木製の枕木を並べた.

2. Common pitfalls and similar expressions

• Support beneath railway rails
  • 枕木 is a railway member laid at intervals to support the rails. Despite containing 枕, it does not mean a wooden pillow for sleeping.