| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| burn |
to be on fire. |
| cave |
a large, natural hole in rock or under the earth. A cave is big enough for a person or animal to enter. |
| cellar |
a room that is built under the ground. People use it for storing things. |
| flight |
a trip on a plane from one place to another. |
| junk |
things that have little worth. |
| nature |
the basic character and qualities of a person or thing. |
| piano |
a musical instrument with a keyboard and many wire strings. A piano is played by pressing keys that cause small hammers to strike the strings. |
| sailor |
a member of the navy who works aboard a ship. |
| scientist |
a person who works in or studies a science. |
| shirt |
a piece of clothing for the upper part of the body. |
| threaten |
to say that you will harm or punish some person or group if something that you demand is not done. |
| wall |
one of the structures that forms a room or divides a space. |
| wicked |
evil in actions or ideas. |
| wool |
the thick, soft hair of sheep and some other animals, which is often used by people to make fabric for clothes, blankets, and other things. |