tumbler

n.

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

[Sense 2a, from the fact that it would tumble if put down.]

1. [Originally from the Xanadu hypertext project] A tumbler is a magic cookie generated as part of a record or message to give it a unique identity. Usually a tumbler includes an encoded form of its creation date, but if a software system has more than one concurrent process that could generate tumblers it must also include an encoding of the process ID. If tumblers will be shared across multiple network hosts, they must also include the host name or network address. Tumblers often include a hash of the rest of the message or record content so that it is possible to verify the correctness of the data the tumbler is attached to.

2. Variant text added to spam instances (often in the Subject line) to make them unique. This kind of tumbler is used to defeat schemes that check an exact hash of an incoming message against known spam signatures; it also compromises some kinds of statistical spam recognition.

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n. a notched pivoted plate in a gunlock.

See the Introduction, Abbreviations and Pronunciation for further details.

In a lock, the locking mechanism which detains the bolt until set free by a key.

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Dansk (Danish)
n. - ølglas, vandglas, akrobat, gøgler

Nederlands (Dutch)
drinkglas, acrobaat, duikelaar (duif en speelgoed)

Français (French)
n. - verre droit, acrobate, tumbler, gorge (d'une écluse), sèche-linge

Deutsch (German)
n. - Trinkglas, Akrobat, Wäschetrockner, Zuhaltung (Türschloß), Nuß (Gewehrschloß), Purzeltaube, Stehaufmännchen, Rollfaß

Ελληνική (Greek)
n. - σωληνωτό ποτήρι, ακροβάτης (που ειδικεύεται στις τούμπες)

Italiano (Italian)
bicchiere, acrobata

Português (Portuguese)
n. - acrobata (m), martelo (m), copo de vidro sem pé (m)

Русский (Russian)
бокал, акробат, (игрушка) ванька-встанька

Español (Spanish)
n. - vaso, cubilete, acróbata, volatinero

Svenska (Swedish)
n. - (dricks)glas, tumlare, tillhållare (i lås), (tork)tumlare

中文（简体）(Chinese (Simplified))
打滚的人, 杂技演员, 翻筋斗者

中文（繁體）(Chinese (Traditional))
n. - 打滾的人, 雜技演員, 翻筋斗者

한국어 (Korean)
n. - 큰 컵, 곡예사, 회전통

日本語 (Japanese)
n. - 大コップ, タンブラー, 槓桿, 軽業師

العربيه (Arabic)
‏(الاسم) قدح, كأس, , ألحمام ألبهلواني, ألبهلوان‏

עברית (Hebrew)
n. - ‮כוס עם ידית, לוליין, לשון המנעול, חלק בבריח הרובה, יונה המתהפכת בעת מעופה, מתג חשמלי עם קפיץ, צעצוע מתנודד‬

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rock tumbler	jewelry tumbler
ticket tumbler