Definition of "turn turtle" in English

Verb

1. To capture a turtle by turning it onto its back.

2. Especially of a boat or ship, or some other vehicle: to turn upside down.

3. To fail; to go belly up.

4. To become upset.

5. To roll upside down with one's surfboard (usually a longboard) to allow a wave, especially a wave that has already broken, to pass over.