| balloon |
a small bag made of thin material that is filled with air or some other gas and used as a decoration or toy. |
| curve |
a line that bends smoothly in one direction without any straight parts. |
| dam |
a wall built across a river or stream to stop the flow of water. |
| double |
two times the amount or number. |
| floor |
the lowest surface in a room; the surface on which one stands in a room. |
| lamp |
a device that uses electricity, oil, or gas to produce light. A lamp usually stands on a desk, table, or floor. |
| operator |
a person whose job is to control a machine. |
| principal |
greatest or first in importance. |
| reply |
to give an answer. |
| sofa |
a comfortable seat with a back and arms made for two or more people; couch. |
| stack |
a neat pile with one thing on top of another. |
| sudden |
happening without notice or warning; not expected. |
| tag |
a piece of thick paper, thin metal, or plastic that gives information and is attached to something. |
| though |
used to connect two parts of a sentence when the meaning of one part seems to disagree with the other. |
| young |
in an early part of life or growth. |