What is the meaning of Key?

noun

• Metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated.
• Something crucial for explaining.
  • usage: "the key to development is economic integration"
• Pitch of the voice.
  • usage: "he spoke in a low key"
• Any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music.
  • synonyms: tonality
• A kilogram of a narcotic drug.
  • usage: "they were carrying two keys of heroin"
• A winged often one-seed indehiscent fruit as of the ash or elm or maple.
  • synonyms: samara, key fruit
• United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812; the poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843.
  • synonyms: Francis Scott Key
• A coral reef off the southern coast of Florida.
  • synonyms: cay, Florida key
• Basketball) a space (including the foul line) in front of the basket at each end of a basketball court; usually painted a different color from the rest of the court. (
  • usage: "he hit a jump shot from the top of the key"; "he dominates play in the paint"
  • synonyms: paint
• A list of answers to a test.
  • usage: "some students had stolen the key to the final exam"
• A list of words or phrases that explain symbols or abbreviations.
• A generic term for any device whose possession entitles the holder to a means of access.
  • usage: "a safe-deposit box usually requires two keys to open it"
• Mechanical device used to wind another device that is driven by a spring (as a clock.
  • synonyms: winder
• The central building block at the top of an arch or vault.
  • synonyms: keystone, headstone
• A lever (as in a keyboard) that actuates a mechanism when depressed.

verb

• Identify as in botany or biology, for example.
  • synonyms: identify, discover, key out, distinguish, describe, name
• Provide with a key.
  • usage: "We were keyed after the locks were changed in the building"
• Vandalize a car by scratching the sides with a key.
  • usage: "His new Mercedes was keyed last night in the parking lot"
• Regulate the musical pitch of.
• Harmonize with or adjust to.
  • usage: "key one's actions to the voters' prevailing attitude"

adjective

• Serving as an essential component.
  • usage: "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure"
  • synonyms: cardinal, central, fundamental, primal