
1) Acrobat 2) Drinking-glass 3) Dryer 4) Glass 5) Goblet 6) Lockcomponent 7) Waterglass 
Found on 
https://www.crosswordclues.com/clue/tumbler

1) Circus performer 2) Drinking glass 3) Drinkware 4) Entertainer 5) Glass acrobat 6) Glass of a sort 7) Gymnast 8) Kind of circus performer 9) Large glass 10) Lock component 11) Mosquito pupa 12) Somersaulting drinking vessel 13) Trampoline artist 14) Trapeze artist 
Found on 
https://www.crosswordclues.com/clue/tumbler

drinking glass with a pointed bottom so that they could not be set down until emptied. Later referred to any drinking glass.
Found on 
http://charlesdickenspage.com/glossary.html
[Project Xanadu]  In the design of the Xanadu computer system, a tumbler is an address of any range of content or link or a set of ranges or links. Tumblers were proposed by Ted Nelson in his book Literary Machines. They were used in the Xanadu FEBE (Front End - Back End) protocol in a manner similar to the use of URIs between web browsers a...
Found on 
http://en.wikipedia.org/wiki/Tumbler_(Project_Xanadu)

• (n.) A kind of cart; a tumbrel. • (n.) 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. • (n.) 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 wit...
Found on 
http://thinkexist.com/dictionary/meaning/tumbler/

A strike in which the pins appear to fall individually.
Found on 
http://www.bowlersparadise.com/help/glossary.shtml

(from the article `lock`) The first serious attempt to improve the security of the lock was made in 1778 when Robert Barron, in England, patented a double-acting tumbler lock. ...
Found on 
http://www.britannica.com/eb/a-z/t/91

(from the article `poultry processing`) ...poultry products, the meat is mixed with a variety of nonmeat ingredients, including flavourings, spices, and salt. Tumbling and massaging are ...
Found on 
http://www.britannica.com/eb/a-z/t/91

1. One who tumbles; one who plays tricks by various motions of the body; an acrobat. ... 2. 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. ... 3. A piece attached to, or forming pa...
Found on 
http://www.encyclo.co.uk/local/20973

 A motor powered rotating cylinder that smoothes and rounds the surfaces of stones, increasing their luster. As the stones tumble around the cylinder, often in a slurry congaing an abrasive of a specific grit, become smoother and more polished.
Found on 
http://www.encyclo.co.uk/local/22290

Mosquito pupa.
Found on 
http://www.encyclo.co.uk/visitor-contributions.php

Flat-based drinking glass with neither stem, foot nor handle. Tumblers are variously shaped and sized, but unlike beakers never have a flared mouth. In the 17thC, heavy metal tumblers with curved sides were designed to tumble back to an upright position if set down awkwardly.
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http://www.encyclo.co.uk/visitor-contributions.php

Originally, a tumbler was a drinking-vessel with a rounded or tapering base which mean that it was unable to stand upright unsupported. Today, the term is applied to a cylindrical glass drinking vessel without handles or a foot but with a heavy flat base.
Found on 
http://www.probertencyclopaedia.com/browse/AT.HTM

[
n] - a gymnast who performs rolls and somersaults and twists etc. 2. [n] - a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown 3. [n] - a glass with a flat bottom but no handle or stem
Found on 
http://www.webdictionary.co.uk/definition.php?query=tumbler

A strike where the pins seem to fall separately.
Found on 
https://sportsaspire.com/bowling-terms

Batten on roller fixed to the bottom edge of a cloth, about which the cloth can be rolled upwards when not in use.
Found on 
https://www.encyclo.co.uk/local/20411
tumbler pigeon noun pigeon that executes backward somersaults in flight or on the ground
Found on 
https://www.encyclo.co.uk/local/20974
 noun a glass with a flat bottom but no handle or stem; originally had a round bottom
Found on 
https://www.encyclo.co.uk/local/20974

a person who performs leaps, somersaults, and other bodily feats. · (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. · a stemless drinking glass having a flat, often thick bottom. · (in a gunlock) a leverlike piece that by the action of a spring for...
Found on 
https://www.infoplease.com/dictionary/tumbler

Cylindrical glass,usually with a thick bottom and a large rim.
Found on 
https://www.whisky.com/information/knowledge/about-whisky/whisky-glossary.h
  No exact match found.