water chestnut

water-chestnut的词性：
n.（名词）

1. A floating aquatic plant (Trapa natans) native to Eurasia and Africa, bearing four-pronged, nutlike fruit and grown as a pond or aquarium ornamental. Also called caltrop, water caltrop
菱角：原产欧亚大陆和非洲的漂浮水生植物（菱属 飘浮菱） ，长带四个尖儿的坚果状果实，生长于池塘或水池中作装饰物 也作 caltrop， water caltrop

2. A tropical Asian aquatic sedge (Eleocharis dulcis) having an edible corm and cylindrical leaves.
菱：热带亚洲水生薹属植物（荸荠 荸荠属） ，有可食用球茎和圆筒形叶片

3. The succulent corm of this plant, used in Asian cooking.Also called Chinese water chestnut
荸荠：这种植物的多汁球茎，用于亚洲的烹调中也作 Chinese water chestnut