water chestnut wa·terc·hest·nut uncommon noun 1. a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits Synonymswater chestnutwater chestnut plantcaltrop 2. Chinese sedge yielding edible bulb-shaped tubers Synonymswater chestnutChinese water chestnutEleocharis dulcis 3. edible bulbous tuber of a Chinese marsh plant Synonymswater chestnut Related words Word family water chestnut plant Broader terms tuberspike rushaquatic plant Narrower terms water caltropling Parts water chestnutTrapa Part of water chestnut WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
