a tropical Old World climbing plant of the gourd family, which bears a pulpy fruit and has long been cultivated 药西瓜。 亦称 bitter apple
Citrullus colocynthis, family Cucurbitaceae 拉丁名Citrullus colocynthis,葫芦科 ■the fruit of this plant 药西瓜果实 ■[mass noun]a bitter purgative drug obtained from this fruit 从药西瓜果实中提取的泻药