針

1. Origins, structure, and basic meaning

• Structure: 針, read はり, denotes a thin pointed needle or a hand indicating a value on a clock or gauge.
• Basic usage: It names a sewing needle threaded with white thread and a clock hand stopped at noon.

2. Common pitfalls and similar expressions

• Pointed needle and indicator hand
  • The sense extends from a thin pointed tool to the slender hand indicating a value on a clock or gauge.