tumbler

[tuhm-bler]
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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 of tumbler

1300–50; Middle English: acrobat; see tumble, -er1. Compare Low German tümeler drinking-cup, kind of pigeon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for tumbler

tumbler

noun
    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: tumblerfulthe contents or quantity such a glass holds
  1. a person, esp a professional entertainer, who performs somersaults and other acrobatic feats
  2. another name for tumble dryer
  3. Also called: tumbling box a pivoted box or drum rotated so that the contents (usually inferior gemstones) tumble about and become smooth and polished
  4. the part of a lock that retains or releases the bolt and is moved by the action of a key
  5. a lever in a gunlock that receives the action of the mainspring when the trigger is pressed and thus forces the hammer forwards
    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
  6. a toy, often a doll, that is so weighted that it rocks when touched
  7. (often capital) a breed of domestic pigeon kept for exhibition or flying. The performing varieties execute backward somersaults in flight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.

Online Etymology Dictionary, © 2010 Douglas Harper