tumbler
n
1
(a) flat-bottomed straight-sided drinking-glass with no handle or stem (无柄、 无脚、 平底、 直壁的)玻璃杯. =>illus at glass 见 glass 插图.
(b) (also tumblerful ) amount held by a tumbler 一玻璃杯的容量
a tumbler of milk 一玻璃杯牛奶.
2 part of a lock that holds the bolt until lifted by a key (锁的)制栓(用钥匙开启锁栓的部件).
3 acrobat who turns somersaults, esp on the ground 翻筋斗的杂技演员(尤指在地面上的).