| background |
The background is the part of a picture or place that is at the back. The background is what is or seems to be farthest away from you. [2 definitions] |
| backhand |
a tennis stroke that involves a forward movement of the arm with the back of the hand outward. |
| backhoe |
a machine that is used for digging. It has a large metal bucket that scoops something up and toward the machine. |
| back out of |
to fail to do something that was agreed upon. |
| backpack |
A backpack is a strong bag with straps that go over your shoulders. It is used to carry things on your back while you walk. [2 definitions] |
| back road |
A back road is a road that avoids traffic and high speed travel. It is often a small, country road that goes through areas with few houses and buildings. |
| back seat |
A back seat is the seat or seating area behind other seats, especially in a car. |
| backstroke |
the arm motion of a swimmer moving along on his or her back. |
| backward |
When something moves backward, it moves toward the back. [3 definitions] |
| backward and forward |
in depth; completely; thoroughly. |
| backyard |
If you live in a house, you might have a backyard. A backyard is an open space behind your house. It usually has grass, and you can play there or maybe have a garden or just keep things there. |
| bacon |
Bacon is salted and smoked meat taken from the back and side of the pig. Bacon is usually cut into long, thin pieces for cooking. |
| bacteria |
Bacteria are very, very small living things made up of one cell each. Bacteria live in most living things and in all parts of the earth. Most bacteria are useful to people. They are important in making soil and helping people to digest food, for example. Some bacteria are harmful, though, and cause disease. |
| bacterium |
A bacterium is a single bit or type of "bacteria." Bacteria are very, very small living things made up of one cell each. Bacteria live in most living things and in all parts of the earth. Most bacteria are useful to people. They are important in making soil and helping people to digest food, for example. Some bacteria are harmful, though, and cause disease. |
| bad |
When something is bad, it means it is not good. You don't like it, or it doesn't do what it should do. [8 definitions] |
| badge |
A badge is a pin, patch of cloth, or ribbon that people wear to show that they belong to a group, have a particular job, or have done something special. |
| badger |
A badger is a strong animal with thick fur. Badgers have stripes on their faces. They also have sharp teeth and long claws. A badger's body is a little long, but it has short legs. A badger usually has its home in the forest. |
| badly |
If you do something badly, you do it in a way that is not good or not correct. [2 definitions] |
| badminton |
Badminton is a sport in which players use rackets to hit a small rubber object back and forth across a high net. The rubber object is called a "shuttlecock" or a "birdie," and when you hit it correctly, it flies easily through the air. |
| badmouth |
(informal) to speak of in a way that is not kind or fair. |
| baffle |
to confuse; puzzle. |