| annually |
once a year; yearly. |
| attention |
the concentration of one's mind on something. |
| bomb |
a metal shell filled with explosives. A bomb destroys a target by being thrown at or dropped on it. |
| chance |
the quality of happening by accident and without being planned or predicted. |
| distinguish |
to tell apart by seeing differences (often followed by "from"). |
| expression |
the appearance of one's face at a particular moment that communicates how one feels. |
| mystery |
a matter that is secret or that cannot be known or explained. |
| negligent |
not showing proper concern; careless. |
| perimeter |
the boundary or border of a figure or area. |
| plastic |
an artificial substance made from certain kinds of chemicals that can be easily shaped when soft. Plastic is formed into many materials and products. |
| research |
careful study of something in order to find out information about it. |
| reside |
to live in a place for a long time; dwell. |
| slumber |
to sleep lightly. |
| twinge |
a sudden, sharp pain that does not last long. |
| waddle |
to walk using short steps while rocking from side to side. |