A small piece of shaped metal with incisions cut to fit the wards of a particular lock, used to operate it. She inserted the key into the lock and turned it to open the door.
A thing that provides a means of gaining access to or understanding something. Education is the key to success.
A set of answers to exercises or problems. The teacher handed out the answer key after the test.
A lever on a musical instrument such as a piano or organ that is pressed to produce a note. He pressed the keys of the piano gently, creating a soft melody.
A button on a computer keyboard or typewriter. She pressed the enter key to submit the form.
A low-lying island or reef, especially in the Caribbean. We spent our vacation on a beautiful key in the Florida Keys.
A system of symbols used to represent special items on a map or diagram. The map key helped us understand the different symbols used for landmarks.
In music, a set of notes based on a particular tonic that forms the tonal foundation of a composition; tonality. The sonata is written in the key of E-flat major.
In cryptography and computing, a piece of information used to control or determine the output of an encryption or decryption algorithm. Make sure the encryption key is stored in a secure location.
A removable wedge or bar inserted between a shaft and a rotating machine element to prevent relative motion. The mechanic replaced the worn key to stop the pulley from slipping on the shaft.
To enter or input data using a keyboard. She keyed the data into the computer quickly.
To adjust or tune something to a particular setting or condition. The technician keyed the machine to operate at maximum efficiency.
To vandalize a car by scratching its paint with a key. Someone keyed his car while it was parked on the street.
To provide a clue or indication for understanding something. The teacher keyed the students into the main themes of the novel.