| chemical |
a substance used in or made by a chemical process. |
| cost |
the amount of money charged or paid for something. |
| depth |
the distance from top to bottom or from front to back. |
| flap |
to swing or wave back and forth with a slapping sound. |
| imagination |
the power of the mind to make a thought or picture of something that is not real. |
| march |
to walk with steady, regular steps together with others. |
| nest |
a structure of sticks and other material that birds make to hold their eggs. |
| pool |
any small still area of liquid that has collected on something. |
| powerful |
having great physical strength. |
| pupil1 |
a young person who is taught by a teacher. |
| quick |
happening very soon. |
| set |
to put in a particular place. |
| swell |
to become larger because of growth or pressure. |
| tear1 |
a drop of liquid that comes from the eye. Tears clean the eye and keep it wet. |
| tree |
a plant that has a long main trunk and many branches. Trees usually grow quite tall. |