| 释义 |
swan potato
noun
Etymology: alteration of swamp potato
: a plant of the genus Sagittaria having tubers used as food: as
a. : a common arrowhead (S. latifolia) of wet lands of the United States and southern Canada with starchy tubers once used extensively by the Indians
b. : a similar common Old World arrowhead (S. sagittifolia) that is sometimes cultivated in Japan and China |