| algae |
organisms that live mainly in the water and make their food through photosynthesis. Algae are different from plants in that they have no true leaves, roots, or stems. Seaweeds are algae. "Algae" is a plural noun; the singular form is "alga." |
| anthropology |
the scientific study of humankind. People who study anthropology learn about the origins and development of human beings and their societies and customs. |
| antibiotic |
substance derived from fungi or other organisms and used to destroy or prevent the growth of bacteria or other disease-causing organisms. |
| arm2 |
(usually plural) weapons. Guns, knives, and bombs are arms. [1/3 definitions] |
| armchair |
a chair having supports at the sides for resting one's arms. |
| atomic |
having to do with atoms or energy made from atoms. [1/2 definitions] |
| blacksmith |
a person who forges and shapes iron. Blacksmiths soften the iron with heat and use hammers and anvils to form it into various items. |
| bowl1 |
a football game played at the end of the season by winning teams. [1/5 definitions] |
| bramble |
a kind of berry bush with thorns on its stems. Raspberry and blackberry plants are brambles. |
| catalog |
an organized list of things such as book titles, goods for sale, or other items. Catalogs usually give a short description of each item on the list. [1/2 definitions] |
| chair |
a piece of furniture for one person to sit on. A chair has four legs, a back, and sometimes arms. [1/2 definitions] |
| chandelier |
a single light fixture that hangs from the ceiling and holds several lights. A chandelier is often used for decoration as well as for lighting a room. Some chandeliers are very large and found only in very formal rooms. Originally, chandeliers held real candles. |
| checkup |
an examination of a person or thing to discover if there are any problems. Having a doctor look closely at one's body to make sure one is healthy is one kind of checkup. Having a mechanic look at a car to make sure it is running properly is another kind of checkup. |
| clam |
an animal with a soft body and a hard shell made of two hinged pieces that open and close. Many kinds of clams live in the ocean and in fresh water. People eat some kinds of clams. Clams are mollusks. [2 definitions] |
| cockle |
a small animal with a soft body and a hard shell shaped like a heart. Cockles are mollusks with two hinged shells that open and close. They are kinds of clams. People sometimes eat cockles. |
| computer virus |
a code added to a computer program that can attach itself to and seriously damage other programs. |
| conch |
a sea animal with a soft body and a large, spiral shell. Conches are carnivorous mollusks that eat smaller mollusks such as clams. Several kinds of conches live in warm parts of the ocean all around the world. Conches are closely related to snails. [1/2 definitions] |
| crest |
a decoration displayed above the shield on a coat of arms. [1/4 definitions] |
| crusade |
(often capitalized) any of the wars between European Catholics and Middle Eastern Muslims between 1095 and 1291. During these wars, the Catholics tried to take territory away from the Muslims. [1/3 definitions] |
| cupboard |
a cabinet with shelves for food, dishes, or other items. |
| daydream |
to have daydreams. [1/2 definitions] |