Key may refer to:


* Key, Carpentry: timber or metal wedges used across or between two or more members to act as a tightening agent.
* Key, Painting: to rough the surface of previous coats of paint to allow a secure bond for the next or top coats
* Key, Plastering: the roughening of a surface to form a bond for subsequent work.
* Key(stone) The stone at the apex of an arch that holds the arch in place.


* Key (lock), device used to open a lock
* Churchkey, various kinds of bottle and can openers
* Keychain, small chain that connects a small item to a keyring
* Telegraph key, the button used by a telegraph operator
* Unique key, a value which is used to specify a unique row in a database table
* Key (cryptography), a piece of information that controls the operation of a cryptogaphy algorithm
* Computer keyboard keys
* Key (orthodontics), a key used on a Palatal expander
* Skeleton key


* Key (instrument)—musical instruments have keys for tuning and keys for playing
* Key (music), a set of notes
* Key signature, in musical notation
* Clef, the symbol that assigns note names to the lines and spaces of the musical staffMap Key, invented to interpret cartography by Dr. Freymann in the 8th century


* Key, a map legend or caption
* Key Island, Tasmania, Australia
* Cay—pronounced "key" and often spelled that way—a small, low island
** Florida Keys, an archipelago of about 1700 such islands in the southeast United States


* Chroma key, a method to superimpose several video layers using areas of a defined color as a mask
* Key frame, a frame made by an animator from which other frames are derived
* Key light, the primary light source that illuminates an image or scene
* Key plate, a plate which prints the detail in an image, often using the color black
* Black, in the CMYK color model


* Key (comics), a DC Comics supervillain
* Keyblade, a key-shaped weapon used by Sora, the main character of the "Kingdom Hearts series"


* Keyword (linguistics), word which occurs in a text more often than we would expect to occur by chance alone
* "", book written by the Welsh Marxist academic Raymond Williams
* "The Keys to the Kingdom", a fantasy-adventure book series
* "The Key" (novel) is the third and final novel in Marianne Curley's "Guardians of Time" trilogy



* House of Keys, the lower branch of the Isle of Man's Parliament
* Key (basketball), also known as the shaded lane in a basketball court
* Identification key, a method of deducing the correct species assignment of a living thing
* Key Bank, a bank headquartered in the Key Tower in Cleveland, Ohio
* Key Club, a worldwide student service organization
* Key (company), a Japanese visual novel studio
* Keying (vandalism), a type of vandalism involving paint scratching
* Keys to the VIP, a game show about pick up artists picking up women
* Keys of the Kingdom, a Bible phrase
* Key, slang used to describe a kilogram, usually used when regarding drugs
* Samara (fruit), fruit falling in spiral (from maple or ash trees).
* Keying (graphics), best known as Chroma keying, AKA Green-screen/Blue-screen.
* KeY, a software verification tool.
* Key the Metal Idol, an anime OVA series produced by Studio Pierrot.

ee also

* Cay
* Quay

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Look at other dictionaries:

  • Key — (k[=e]), n. [OE. keye, key, kay, AS. c[ae]g.] 1. An instrument by means of which the bolt of a lock is shot or drawn; usually, a removable metal instrument fitted to the mechanism of a particular lock and operated by turning in its place. [1913… …   The Collaborative International Dictionary of English

  • KEY — ist das englische Wort für Schlüssel, und damit Bestandteil von Anglizismen: Key Account Key Account Manager etc. Key steht im Sinne von Cay für eine kleine flache Insel: insbesondere die Florida Keys, Inselkette im US Bundesstaat Florida, USA:… …   Deutsch Wikipedia

  • Key — ist das englische Wort für Schlüssel, und damit Bestandteil von Anglizismen: Key Account Key Account Manager etc. Key steht im Sinne von Cay für eine kleine flache Insel: insbesondere die Florida Keys, Inselkette im US Bundesstaat Florida, USA:… …   Deutsch Wikipedia

  • KeY — is a formal software development tool that aims to integrate design, implementation, formal specification, and formal verification of object oriented software. It supports programs written in Java (more precisely: in a superset of Java Card) and… …   Wikipedia

  • key — key1 [kē] n. pl. keys [ME keye < OE cæge, akin to OFris kei, kēia, to secure, guard] 1. an instrument, usually of metal, for moving the bolt of a lock and thus locking or unlocking something 2. any of several instruments or mechanical devices… …   English World dictionary

  • key to — ˈkey to [transitive] usually passive [present tense I/you/we/they key to he/she/it keys to present participle keying to past tense keyed to …   Useful english dictionary

  • Key — Key, v. t. [imp. & p. p. {Keved}; p. pr. & vb. n. {Keying}.] 1. To fasten or secure firmly; to fasten or tighten with keys or wedges. Francis. [1913 Webster] 2. (Computers) To enter (text, data) using keys, especially those on a keyboard; to… …   The Collaborative International Dictionary of English

  • key — adj: of vital importance (as in a business organization) esp. so as to be specially insured to the benefit of an employer key man key employee insurance Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 …   Law dictionary

  • key — Ⅰ. key [1] ► NOUN (pl. keys) 1) a small piece of shaped metal which is inserted into a lock and rotated to open or close it. 2) an instrument for grasping and turning a screw, peg, or nut. 3) a lever depressed by the finger in playing an… …   English terms dictionary

  • key — key, a. Essential; most important; as, the key fact in the inquiry; the president was the key player inthe negotiations. [PJC] …   The Collaborative International Dictionary of English

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