| acre |
a unit of area equal to 43,560 square feet, used to measure land. The acre is a standard unit of measurement in the United States and the United Kingdom. |
| acreage |
the number of acres in an area of land. |
| aircraft carrier |
a very large ship with a flat deck on which airplanes can take off and land. |
| airmail |
to send by air rather than by land or sea. [1/5 definitions] |
| airport |
a large area of level land where airplanes can land and take off. |
| airstrip |
a landing strip or cleared area where aircraft land or take off; runway. An airstrip usually is not paved and does not have the workers or equipment of an airport. |
| alligator |
a large reptile with short legs, a long body and tail, and a long, wide snout. Alligators are protected by thick skin with many hard bumps. They live in rivers, lakes, swamps, and other bodies of water in the southeast United States and in China. They usually eat insects, fish, turtles, snakes, birds, and other water animals, but have been known to attack small land mammals. They are closely related to crocodiles. Chinese alligators are endangered because their habitat is being changed by people. |
| amphibian |
a small animal that spends part of its life cycle in water and part of its life cycle on land. Amphibians hatch in water and breathe with gills. Then they develop lungs so the adults can breathe air. Amphibians are cold-blooded animals with skeletons inside their bodies. Frogs, toads, and salamanders are amphibians. [2 definitions] |
| amphibious |
able to live both on land and in water. [2 definitions] |
| Antarctic |
the land or seas at or near the South Pole; Antarctica or the Antarctic Ocean (used with "the"). |
| army |
a large group of soldiers trained to use weapons to fight on land. [1/3 definitions] |
| artillery |
large weapons used in land battles, such as cannons or rockets. Artillery is too heavy for a person to carry and is sometimes mounted on wheels. [1/2 definitions] |
| ashore |
on land. [1/2 definitions] |
| basin |
a large area of land drained by a river. [1/2 definitions] |
| bay1 |
a part of a sea or lake that cuts into a coastline and is partly surrounded by land. |
| beach |
the land at the edge of a lake, ocean, or other body of water. A beach slopes gently toward the water and usually has sand or pebbles. [1/2 definitions] |
| body |
a separate mass of land, water, or other matter. [1/5 definitions] |
| brush2 |
land covered by thick growth of plants or trees. [1/2 definitions] |
| butte |
a steep hill or mountain with a flat top that stands alone on flat land. |
| cape2 |
a point of land that sticks out into a large body of water. |
| capitalism |
an economic system in which land, factories, and other resources are owned by individuals instead of the government. In this system, the prices of things we buy are decided by the people who sell them and not by the government. |