tumbler
[ˈtʌmblə]
n
a flat-bottomed drinking glass with no handle or stem. Originally, a tumbler had a round or pointed base and so could not stand upright.the contents or quantity such a glass holds
a person, esp a professional entertainer, who performs somersaults and other acrobatic feats
another name for tumble dryer
Also called: tumbling box a pivoted box or drum rotated so that the contents (usually inferior gemstones) tumble about and become smooth and polished
the part of a lock that retains or releases the bolt and is moved by the action of a key
a lever in a gunlock that receives the action of the mainspring when the trigger is pressed and thus forces the hammer forwards
a part that moves a gear in a train of gears into and out of engagement.a single cog or cam that transmits motion to the part with which it engages
a toy, often a doll, that is so weighted that it rocks when touched
a breed of domestic pigeon kept for exhibition or flying. The performing varieties execute backward somersaults in flight
柯林斯
百科
