KEY Definition Meaning - Merriam-Webster The meaning of KEY is a usually metal instrument that is used to open a lock or to start or access a mechanism How to use key in a sentence
Key - definition of key by The Free Dictionary 1 To lock with a key 2 To be the determining or crucial factor in: a double that keyed a three-run rally in the fifth inning 3 Architecture To furnish (an arch) with a keystone 4 Music To regulate the pitch of
Key Definition Meaning | Britannica Dictionary KEY meaning: 1 : a device that is used to open a lock or start an automobile often used figuratively; 2 : a device that looks like a key and that is used to turn something
KEY definition in American English | Collins English Dictionary A key is a specially shaped piece of metal that you place in a lock and turn in order to open or lock a door, or to start or stop the engine of a vehicle They put the key in the door and entered