# Twin fin

> A board with two fins, fast and loose in small waves.

**What "twin fin" means in surfing:** A board with two fins, fast and loose in small waves.

**Also said:** Twinnie

**Category:** Gear

## Related words

- [Thruster](https://surfslang.com/thruster): A board with three fins, the most common setup on modern shortboards.
- [Fish](https://surfslang.com/fish): A short, wide surfboard with a split swallow tail, built for speed in small to medium waves.

---

Source: [Twin fin](https://surfslang.com/twin-fin) on Surfslang.com, the surf slang glossary. Full glossary: https://surfslang.com/llms.txt