1. (noun)
water chestnut, water chestnut plant, caltrop
- a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits Synonyms: water chestnut plant, star-thistle, devil's weed, water chestnut, caltrop
2. (noun)
water chestnut, Chinese water chestnut, Eleocharis dulcis
- Chinese sedge yielding edible bulb-shaped tubers
3. (noun)
water chestnut
- edible bulbous tuber of a Chinese marsh plant Synonyms: water chestnut plant, water chestnut, caltrop