armature head lock key

armature

— noun coil in which voltage is induced by motion through a magnetic field

head Noun

— The head is the highest and most important part of the body. He put his head on the desk and fell asleep. — The head Is the owner of something. After the problems, the head of the company left. — The bathroom on a ship is called the head.

head Verb

— To go in a direction is to head there. Bill heads for the mall after work.

lock Noun

— A lock is a metal thing on a door (or on a window, drawer, etc.) that stops people from opening the door unless they have the right key to open it. No one will take things from my house. I have a very strong lock on the door. — A lock is two or more gates (doors) in water to let boats move from lower water to higher water or the other way.

lock Verb

— Someone locks a door when they close the lock with a key so that no one can come in. Remember to lock the door when you leave the house.

key Noun

— A key is a small instrument, usually metal used to open locks. I put my key in the lock and turned it. — A key is a button used for typing. Type your name and hit the ENTER key. — A key is the part of a keyboard instrument you press with your fingers to play a sound. The piano has a pattern of black and white keys. — The key in music is the tonal centre of a piece of music. Mozart's Symphony No.40 is written in the key of G minor.

key Adjective

— Something that is key, is an important or a main thing. Accuracy is a key part of playing music.

key Verb

— To key is to lock something with key, or like using a key. — To key is to put locks on a building. — The locksmith was called in to key the building for better security. — To key is to enter information into a computer. He keyed in all the data from the survey.