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Key

kiː

Key definitions
noun
keys key
  1. a small piece of shaped metal with incisions cut to fit the wards of a particular lock, which is inserted into a lock and turned to open or close it

    "there were two keys to the cupboard"

    • a shaped metal implement for operating a switch in the form of a lock, especially one operating the ignition of a motor vehicle

      "Nat turned the key in the ignition"

    • an instrument for grasping and turning a screw, peg, or nut, especially one for winding a clock or turning a valve
    • a pin, bolt, or wedge inserted into a hole or between parts so as to lock the parts together
  2. each of several buttons on a panel for operating a computer, typewriter, or telephone

    "press the ENTER key"

    • a lever depressed by the finger in playing an instrument such as the organ, piano, flute, or concertina

      "a piece composed solely for the white keys on the piano"

    • a lever operating a mechanical device for making or breaking an electric circuit, for example in telegraphy
  3. a thing that provides a means of achieving or understanding something

    "discipline seems to be the key to her success"

    • an explanatory list of symbols used in a map, table, etc.
    • a set of answers to exercises or problems

      "a key at the back of the book provides the answers"

    • a word or system for solving a cipher or code

      "it took him some time to find the key, the connection between the code and the Odyssey"

    • the first move in the solution of a chess problem
    • a field in a record which is used to identify that record uniquely
  4. a group of notes based on a particular note and comprising a scale, regarded as forming the tonal basis of a piece of music

    "the key of E minor"

    • the tone or pitch of someone's voice

      "his voice had changed to a lower key"

    • the prevailing tone of a piece of writing, situation, etc.

      "it was like the sixties all over again, in a new, more austerely intellectual key"

    • the prevailing range of tones in a painting

      "these mauves, lime greens, and saffron yellows recall the high key of El Greco's palette"

  5. the dry winged fruit of an ash, maple, or sycamore, typically growing in bunches; a samara
  6. the part of a first coat of wall plaster that passes between the laths and so secures the rest
    • the roughness of a surface, helping the adhesion of plaster or other material
  7. the keyhole-shaped area marked on the court near each basket

    "he hit another jumper from the top of the key"

verb
keys keying keyed key
  1. enter or operate on (data) by means of a keyboard or keypad

    "not everyone can key data quickly and accurately"

  2. fasten (something) in position with a pin, wedge, or bolt

    "the coils may be keyed into the slots by fibre wedges"

  3. roughen (a surface) to help the adhesion of plaster or other material

    "a wooden float with nails driven through it is used to key the wall surface between coats"

  4. word (an advertisement in a periodical), typically by varying the form of the address given, so as to identify the publication generating particular responses

    "one keys advertisements and measures returns"

  5. vandalize (a car) by scraping its paint with a key
  6. be the crucial factor in achieving

    "Ewing keyed a 73–35 advantage on the boards with twenty rebounds"