KEY SMART CHECKING ® everyday checking with everything you need. Take five minutes to open, plus earn a $300 * bonus. The meaning of KEY is a usually metal instrument that is used to open a lock or to start or access a mechanism.

Understanding the Context

How to use key in a sentence. KEY definition: 1. a piece of metal that has been cut into a special shape and is used for opening or closing a.. Learn more.

Key Insights

Of crucial importance; significant: key decisions; the key element of the thesis. 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. Definition of key noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Final Thoughts

KEY definition: a reef or low island; cay. See examples of key used in a sentence. Of crucial importance; significant. Key decisions; the key element of the thesis. Our expert locksmiths are here to help you whether you are in an emergency situation or needing a car key duplicated. You can count on our skilled locksmiths to provide the solution you need.