羅針盤

1. Origins, structure, and basic meaning

• Structure: Written 羅針盤 and read らしんばん, it means a compass and, figuratively, a principle that guides one's course.
• Basic usage: It is used for navigation at sea and for a mentor's words guiding a life.

2. Common pitfalls and similar expressions

• Instrument and metaphor
  • Context distinguishes the physical device from a figurative source of direction.