| ally |
to join or unite for a particular purpose (usually followed by "to" or "with"). |
| annoyance |
someone or something that bothers or irritates. |
| armor |
a suit made of leather, metal, or other strong material, worn to protect the body during battle. |
| contributor |
one that gives money or something else of value to a common fund or collective effort. |
| deepen |
to make or become deep or deeper. |
| feud |
anger, unfriendliness, or fighting between families or other related groups that lasts for a long time. |
| halo |
a circle of light shining around the head of a god, an angel, or a saint in a picture. |
| humor |
a quality that makes people laugh or feel amused. |
| introduce |
to present to another person. |
| nugget |
a small, solid lump. |
| physics |
the science that deals with matter and energy, their qualities, and the relationships between them. It includes the study of light, heat, sound, electricity, and force. (The word is used with a singular verb.) |
| pollute |
to make dirty or harmful to health by mixing in or adding waste material. |
| precipitation |
the act of water falling in the form of rain, snow, sleet, or hail. |
| scour1 |
to clean by rubbing hard. |
| timetable |
a schedule that lists the times at which certain events take place. People read timetables to find out when trains, buses, or airplanes will arrive or leave. |