| bubble |
a ball of air or other gas inside another substance. |
| center |
the area or part of something that forms the middle. |
| dancer |
someone who is dancing or whose profession is dancing. |
| hire |
to give a job to. |
| invitation |
the act of asking someone in a polite way to come to something or do something. |
| knee |
the joint between the upper and lower part of the leg. |
| lock |
a device used to prevent people from taking something or to keep something closed. |
| lookout |
the act of keeping watch or searching. |
| move |
to change position or place. |
| pen |
a long, thin tool used for writing or drawing in ink. |
| pile |
a number of things on top of each other, or a mass of material that forms a small hill. |
| reflection |
heat, light, or an image that bounces off an object or surface. |
| rib |
one of the set of bones that curve around the chest of a person or animal. |
| road |
a long, hard surface for vehicles and people to travel on. |
| slope |
A surface that is higher on one end than the other. |