tumbler

[tuhm-bler] /ˈtʌm blər/
noun
1.
a person who performs leaps, somersaults, and other bodily feats.
2.
(in a lock) any locking or checking part that, when lifted or released by the action of a key or the like, allows the bolt to move.
3.
a stemless drinking glass having a flat, often thick bottom.
4.
(in a gunlock) a leverlike piece that by the action of a spring forces the hammer forward when released by the trigger.
5.
Machinery.
  1. a part moving a gear into place in a selective transmission.
  2. a single cog or cam on a rotating shaft, transmitting motion to a part with which it engages.
6.
a tumbling box or barrel.
7.
a person who operates a tumbling box or barrel.
8.
one of a breed of dogs resembling a small greyhound, used formerly in hunting rabbits.
9.
Also called roller. one of a breed of domestic pigeons noted for the habit of tumbling backward in flight.
10.
a toy, usually representing a fat, squatting figure, that is weighted and rounded at the bottom so as to rock when touched.
11.
a tumbrel or tumble cart.
Origin
1300-50; Middle English: acrobat; see tumble, -er1. Compare Low German tümeler drinking-cup, kind of pigeon
Examples from the web for tumbler
  • The odds are good that tumbler on your table contains water that came from an underground aquifer.
  • At the end of the drying cycle, aeration air leaving the drying tumbler vents to atmosphere.
  • Provide door with tumbler lock with key and full length piano hinge.
  • Presents several examples of getting misled by the candle and tumbler demonstration.
  • Toggle switches shall be totally enclosed tumbler type with bodies of phenolic compound.
British Dictionary definitions for tumbler

tumbler

/ˈtʌmblə/
noun
1.
  1. 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
  2. Also called tumblerful. the contents or quantity such a glass holds
2.
a person, esp a professional entertainer, who performs somersaults and other acrobatic feats
3.
another name for tumble dryer
4.
Also called tumbling box. a pivoted box or drum rotated so that the contents (usually inferior gemstones) tumble about and become smooth and polished
5.
the part of a lock that retains or releases the bolt and is moved by the action of a key
6.
a lever in a gunlock that receives the action of the mainspring when the trigger is pressed and thus forces the hammer forwards
7.
  1. a part that moves a gear in a train of gears into and out of engagement
  2. a single cog or cam that transmits motion to the part with which it engages
8.
a toy, often a doll, that is so weighted that it rocks when touched
9.
(often capital) a breed of domestic pigeon kept for exhibition or flying. The performing varieties execute backward somersaults in flight
Word Origin and History for tumbler
n.

mid-14c., "acrobat," agent noun from tumble (v.). A fem. form was tumbester (late 14c.). Meaning "drinking glass" is recorded from 1660s, originally a glass with a rounded or pointed bottom which would cause it to "tumble," and thus it could not be set down until it was empty.