Definition that contains genus trapa
- trapaceae family comprising solely the genus Trapa; in some classifications treated as a subfamily or tribe of the family Onagraceae
- water chestnut a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
- caltrop a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
- water chestnut plant a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
- family trapaceae family comprising solely the genus Trapa; in some classifications treated as a subfamily or tribe of the family Onagraceae