| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| board |
a flat, cut piece of wood. |
| complete |
having all of the parts that are necessary; whole. |
| early |
near the beginning of something. |
| harden |
to make less soft or more rigid. |
| mistake |
a thought or action that is not correct. |
| number |
a unit with a fixed value that is used to count or to tell the position of something. You can write a number as a word or a symbol, such as "nine" or "9." |
| park |
an area of public land that anyone can use for rest and enjoyment. |
| silk |
a fine, soft, shiny fiber produced by certain insects. |
| smoke |
the black, white, or gray gases that you see in the air when something burns. |
| stray |
to wander away from a group or place. |
| tack |
a short pin with a flat, wide head. |
| ticket |
a small piece of paper that shows that you have paid for something. |
| truck |
a large motor vehicle used for carrying heavy loads. |
| wage |
(often plural) money paid at regular times to a person for doing work. |