| agriculture |
the science and work of raising crops and farm animals; farming. |
| crest |
a tuft of feathers, bone, or fur on an animal's head, or something that looks like this. The comb of a rooster is one kind of crest. |
| discontent |
not satisfied; unhappy. |
| dormitory |
a building with many bedrooms, often lived in by students. Many colleges have dormitories. |
| gradually |
by small steps or degrees. |
| groove |
a long narrow cut or dent in a surface. |
| intricate |
having many complex parts, angles, or aspects; involved; elaborate. |
| optional |
left to someone's choice; not required. |
| pollution |
poisons, wastes, or other materials that pollute. |
| prepare |
to make ready. |
| reproduce |
to make a copy of. |
| shuffle |
to drag or scrape the feet along the floor while walking. |
| thermometer |
an instrument for measuring temperature. Some thermometers are made of a closed glass tube containing mercury or alcohol that rises or falls as the temperature rises or falls. |
| urgent |
needing immediate action or attention. |
| whole |
having the entire amount or length. |