Definition Definition

key - Meaning and Examples

Meaning of 'key' (Webster Dictionary)

1 . Key [ n.]
- 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.
- An instrument which is turned like a key in fastening or adjusting any mechanism; as, a watch key; a bed key, etc.
- That part of an instrument or machine which serves as the means of operating it; as, a telegraph key; the keys of a pianoforte, or of a typewriter.
- A position or condition which affords entrance, control, pr possession, etc.; as, the key of a line of defense; the key of a country; the key of a political situation. Hence, that which serves to unlock, open, discover, or solve something unknown or difficult; as, the key to a riddle; the key to a problem.
- That part of a mechanism which serves to lock up, make fast, or adjust to position.
- A piece of wood used as a wedge.
- The last board of a floor when laid down.
- A keystone.
- That part of the plastering which is forced through between the laths and holds the rest in place.
- A wedge to unite two or more pieces, or adjust their relative position; a cotter; a forelock.
- A bar, pin or wedge, to secure a crank, pulley, coupling, etc., upon a shaft, and prevent relative turning; sometimes holding by friction alone, but more frequently by its resistance to shearing, being usually embedded partly in the shaft and partly in the crank, pulley, etc.
- An indehiscent, one-seeded fruit furnished with a wing, as the fruit of the ash and maple; a samara; -- called also key fruit.
- A family of tones whose regular members are called diatonic tones, and named key tone (or tonic) or one (or eight), mediant or three, dominant or five, subdominant or four, submediant or six, supertonic or two, and subtonic or seven. Chromatic tones are temporary members of a key, under such names as " sharp four," "flat seven," etc. Scales and tunes of every variety are made from the tones of a key.
- The fundamental tone of a movement to which its modulations are referred, and with which it generally begins and ends; keynote.
- Fig: The general pitch or tone of a sentence or utterance.
2 . Key [ v. t.]
- To fasten or secure firmly; to fasten or tighten with keys or wedges.

Meaning of 'key' (Princeton's WordNet)

1 . key [ n]
Meaning (1):
- a generic term for any device whose possession entitles the holder to a means of access
Example in sentence:
  • a safe-deposit box usually requires two keys to open it
Meaning (2):
- (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
Example in sentence:
  • he dominates play in the paint;
  • he hit a jump shot from the top of the key
Meaning (3):
- pitch of the voice
Example in sentence:
  • he spoke in a low key
Meaning (4):
- a list of answers to a test
Example in sentence:
  • some students had stolen the key to the final exam
Meaning (5):
- something crucial for explaining
Example in sentence:
  • the key to development is economic integration
Meaning (6):
- a kilogram of a narcotic drug
Example in sentence:
  • they were carrying two keys of heroin
7 . key [ v]
Meaning (7):
- vandalize a car by scratching the sides with a key
Example in sentence:
  • His new Mercedes was keyed last night in the parking lot
Meaning (8):
- harmonize with or adjust to
Example in sentence:
  • key one's actions to the voters' prevailing attitude
Meaning (9):
- provide with a key
Example in sentence:
  • We were keyed after the locks were changed in the building
10 . key [ s]
Meaning (10):
- serving as an essential component
Example in sentence:
  • a cardinal rule;
  • an example that was fundamental to the argument;
  • computers are fundamental to modern industrial structure;
  • the central cause of the problem