pinwrench
/ˈpɪnˌrɛntʃ/
noun
- A tool with a pin or pins that fits into holes or slots in a fastener, used to tighten or loosen it.
- The pinwrench has two pins that fit into the holes of the nut for a secure grip.
- The mechanic used a pinwrench to adjust the bicycle's bottom bracket.
- You'll need a pinwrench to remove the lock ring on that gear.
Synonyms