tumbler

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One that tumbles, especially an acrobat or gymnast.
• noun A drinking glass, originally with a rounded bottom.
• noun A flat-bottomed glass having no handle, foot, or stem.
• noun The contents of such a drinking glass.
• noun A toy made with a weighted rounded base so that it can rock over and then right itself.
• noun One of a breed of domestic pigeon that characteristically tumbles or somersaults in flight.
• noun A piece in a gunlock that forces the hammer forward by action of the mainspring.
• noun The part in a lock that releases the bolt when moved by a key.
• noun The drum of a clothes dryer.
• noun A tumbling box.
• noun A projecting piece on a revolving or rocking part in a mechanism that transmits motion to the part it engages.
• noun The rocking frame that moves a gear into place in a selective transmission, as in an automobile.

from The Century Dictionary.

• noun A wheel or drum with revolving paddles, used in tanning hides.
• noun One who tumbles; one who performs by turning somersaults, walking on the hands, etc., as a mountebank.
• noun One of the religious sect known as Dunkers. See Dunker.
• noun A breed of domestic pigeons which perform certain aërial evolutions called tumbling, during which they fall through the air for a distance before making play with their wings.
• noun A kind of greyhound formerly used in coursing rabbits: so called in allusion to his characteristic motions and springs.
• noun A porpoise.
• noun The aquatic larva of a mosquito, gnat, or other member of the Culicidæ; a wriggler: so called from the manner in which they roll over and over in the water.
• noun A figure or toy representing a fat person, usually a mandarin, sitting with crossed legs. The base of the figure is rounded, so as to rock at a touch.
• noun One of a band of London reckless profligates in the early part of the eighteenth century.
• noun A drinking-glass.
• noun A sort of spring-latch in a lock which detains the bolt so as to prevent its motion until a key lifts it and sets the bolt at liberty.
• noun Same as tumbling-box.
• noun In a gun-lock, a piece of the nature of a lever, attached to the pivot of the hammer of the lock, and swiveled to the tip of the mainspring, which, when the hammer is released by pulling the trigger, forces the hammer violently forward, causing it to strike and explode the charge. See also cut under gun-lock.
• noun A form of printing-machine which rocks or tumbles to the impression-surface.
• noun Nautical, one of the movable pins for the engagement of the cat-head stopper and shank-painter.
• noun In weaving, any one of a set of levers (also called coupers) from which in some forms of loom the heddles are suspended.
• noun Same as tumbrel, 1.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who tumbles; one who plays tricks by various motions of the body; an acrobat.
• noun A movable obstruction in a lock, consisting of a lever, latch, wheel, slide, or the like, which must be adjusted to a particular position by a key or other means before the bolt can be thrown in locking or unlocking.
• noun (Firearms) A piece attached to, or forming part of, the hammer of a gunlock, upon which the mainspring acts and in which are the notches for the sear point to enter.
• noun A drinking glass, without a foot or stem; -- so called because originally it had a pointed or convex base, and could not be set down with any liquor in it, thus compelling the drinker to finish his measure.
• noun (Zoöl.) A variety of the domestic pigeon remarkable for its habit of tumbling, or turning somersaults, during its flight.
• noun (Zoöl.) A breed of dogs that tumble when pursuing game. They were formerly used in hunting rabbits.
• noun Prov. Eng. & Scot. A kind of cart; a tumbrel.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One who tumbles; one who plays tricks by various motions of the body; an acrobat.
• noun A movable obstruction in a lock, consisting of a lever, latch, wheel, slide, or the like, which must be adjusted to a particular position by a key or other means before the bolt can be thrown in locking or unlocking.
• noun A piece attached to, or forming part of, the hammer of a gunlock, upon which the mainspring acts and in which are the notches for sear point to enter.
• noun A drinking glass that has no stem, foot, or handle — so called because such glasses originally had a pointed or convex base and could not be set down without spilling. This compelled the drinker to finish his measure.
• noun A variety of the domestic pigeon remarkable for its habit of tumbling, or turning somersaults, during its flight.
• noun A beverage cup, typically made of stainless steel, that is broad at the top and narrow at the bottom commonly used in India.
• noun obsolete A dog of a breed that tumbles when pursuing game, formerly used in hunting rabbits.
• noun UK, Scotland, dialect, obsolete A kind of cart; a tumbrel.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a gymnast who performs rolls and somersaults and twists etc.
• noun a glass with a flat bottom but no handle or stem; originally had a round bottom
• noun a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown