| air conditioner |
a machine that cools the air in a room or car. An air conditioner also takes the dust and dampness out of the air. |
| aircraft |
any machine that can fly through the air, such as an airplane, helicopter, glider, or balloon. |
| airplane |
a machine that can fly because of the force of air upon its wings; plane. An airplane is driven by propellers or a jet engine. |
| android |
a robot or machine having human characteristics. |
| answering machine |
An answering machine is a machine that records a telephone message. |
| apparatus |
An apparatus is a piece of equipment, machine, or group of machines designed to let people do some specific thing. If you want to swim deep underwater, for example, you would probably wear an apparatus designed to let you breathe. |
| assembly |
a collection of parts put together to form a whole, as in a machine. [1/4 definitions] |
| ATM |
an abbreviation for automated teller machine, a computerized machine used for banking. |
| automated |
When something is automated, it is done by a machine instead of a human. Many jobs that humans used to do are automated now. |
| automated teller machine |
a computerized machine used for banking. |
| automatic |
When something is automatic, it works by itself. When a machine is automatic, it usually only needs a person to push a button to start it. |
| automobile |
An automobile is a car. An automobile is a machine that people drive and ride in. |
| backhoe |
a machine that is used for digging. It has a large metal bucket that scoops something up and toward the machine. |
| ball bearing |
a machine part made of a groove in the shape of a circle with metal balls that roll in it. A ball bearing lets an axle or other part move easily. |
| bearing |
a machine part that holds another, moving part and allows it to move with less friction. Bearings are often used to help wheels turn. [1/4 definitions] |
| belt |
a continuous band of heavy, flexible material used to drive a machine or carry materials. [1/3 definitions] |
| blender |
a machine used to prepare liquid foods by chopping and mixing at high speeds. |
| brake1 |
a device used to slow or stop the motion of a vehicle or machine. [1/2 definitions] |
| break down |
When a machine breaks down, it stops working. Things like cars, trucks, buses, and elevators sometimes break down. [1/2 definitions] |
| button |
A button is what you push to make some things work. You often push a button to start a computer or other machine. [1/6 definitions] |
| cab1 |
the enclosed part of a truck or big machine where the driver or operator sits. [1/3 definitions] |