key
keynoun
UK/kiː/US/kiː/
Dạng từ: keys
LOCK
A1a piece of metal that you use to open or lock a door or start a car
- I've lost my house keys.
MOST IMPORTANT
B1the most important thing that helps you to achieve something
- The key to success is hard work.
BUTTON
B1a button on a keyboard or phone that you press
- Press the Enter key to continue.
keyadjective
UK/kiː/US/kiː/
B2very important and having a big effect
- She played a key role in the project.