| arctic |
(often capitalized) the region around the North Pole and inside the Arctic Circle. [1/3 definitions] |
| around |
in a circle. [2/12 definitions] |
| 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. |
| belt |
A belt is a circle of rubber or other material used to drive a machine or move materials. [1/3 definitions] |
| bull's-eye |
the center of a round target, usually marked with a small circle. [1/2 definitions] |
| center |
The center of a circle is the exact middle of the circle. [1/4 definitions] |
| chord1 |
a line that connects two points on a circle. |
| circle |
a closed curve made up of points that are all the same distance from a fixed center point. [4/5 definitions] |
| circuit |
A circuit is a line or route that goes around an area and makes a kind of circle. [1/4 definitions] |
| circular |
having the shape of a circle; round. [1/3 definitions] |
| circumference |
the line that forms the outside edge of a circle or other round figure or area. [1/2 definitions] |
| collar |
A collar is something that makes a circle around the neck. Dogs and cats often wear collars. [1/2 definitions] |
| cone |
a solid figure with a flat base in the shape of a circle and one curved face that narrows into a point. [1/3 definitions] |
| counterclockwise |
When something turns counterclockwise, it turns in the opposite direction that the hands of a clock turn. Starting from the top, the hands of a clock usually move toward the right and then make a circle as they make their way back to the top. If the hands move counterclockwise, they move in the opposite direction. They start moving toward the left as they make a circle back to the top of the clock. |
| crane |
a machine with a tall arm that can move up and down or around in a circle to lift and move heavy objects. [1/3 definitions] |
| crank |
a device that moves things in a circle. Cranks have a lever attached at a right angle to the end of an arm that moves in a circle. Cranks are turned by hand or by another arm that connects to the lever. [1/4 definitions] |
| crown |
A crown is a thing in the shape of a circle that a king or queen may wear on their head. Crowns are often made of gold or silver, and they may be decorated with beautiful stones. [1/2 definitions] |
| curve |
When a road or river curves, it bends. When something curves, it makes a shape like part of a circle. [1/5 definitions] |
| curved |
When something is curved, it has a shape like part of a circle. Something that is curved is not straight. |
| cycle |
a circle of events that repeats in a regular pattern. [1/3 definitions] |
| dial |
A dial is a flat, round thing that is part of some older telephones. These telephones have numbers on the front of them arranged in a circle. The dial is attached to the front of the phone but has holes in it--one over each number. You put your finger in a hole over a number and move the dial around to select that number. When you've finished selecting each of the numbers you want, your call can go through. [1/4 definitions] |