historical a small drum

〈史〉 小鼓。

something resembling a drum in shape or construction, in particular

外形（或结构）似鼓的，尤指：

a circular frame for holding fabric taut while it is being embroidered

（刺绣用的）绷圈。

Architecture a wall of circular plan, such as one supporting a dome or surrounded by a colonnade

【建筑】 （建筑物的）圆顶坐圈。

Architecture each of a sequence of cylindrical stones forming the shaft of a column

【建筑】 （作柱身用的）鼓形石块。

Architecture a lobby enclosed by a ceiling and folding doors to prevent draughts, typically within a church porch

【建筑】 （多指在教堂门廊中的）圆形挡风门厅。

a sloping buttress or projection in a real tennis or fives court

（室内网球场内的）突出壁。

[usu. as modifier]a sliding flexible shutter or door on a piece of furniture, made of strips of wood attached to a backing of canvas

家具上的滑动门

decorate or embroider on a tambour

在绷圈上绣