n.不倒翁；雜技演員；平底無腳酒杯；鎖的制動栓

Why could the tumbler not fall down? 不倒翁為什么不倒？

He was a tumbler when he was young. 他年輕時是雜技演員。

A dozen of plates were on the head of the tumbler unsteadily! 雜技演員頭上晃晃悠悠地頂著一疊瓷碟。

Whisky is usually drunk in a tumbler. 威士忌通常是裝在平底無頸酒杯里喝的。

She ordered a tumbler of orange juice. 她點了一大杯橘子汁。