| caution |
care and attention to safety. |
| cloth |
material made by weaving. |
| flash |
a sudden, bright light that shines and then disappears. |
| guess |
to give an answer or opinion without enough information to be certain. |
| happen |
to take place; occur. |
| instrument |
a tool or mechanical device used for special work. |
| letter |
a symbol, such as "A" or "B," in writing that represents a sound in a language. |
| railroad |
a road of two connected steel bars along which trains move, or a system of transportation that uses these roads. |
| rub |
to push back and forward across something using pressure. |
| shack |
a small, cheaply constructed building, used as a house or for storage. |
| short |
not long in size or time. |
| spare |
available for use at a later time. |
| student |
a person who goes to a school or college. |
| winner |
one that wins or is likely to win or succeed. |
| yank |
(informal) to pull or take out suddenly; jerk. |