torusn.

英 'tɔːrəs | 美 'torəs

中文n. [植] 花托；圆环面；[解剖] 隆凸

词根词源

torus (n.)1560s, in architecture, "large, rounded molding at the base of a column," from Latin torus "a swelling, bulge, knot; cushion, couch."

关键词

torus