| aircraft |
any machine that can fly through the air, such as an airplane, helicopter, glider, or balloon. |
| beckon |
to signal to come using a motion of the head or hands. |
| crest |
a tuft of feathers, bone, or fur on an animal's head, or something that looks like this. The comb of a rooster is one kind of crest. |
| deck |
the floor on a ship or boat. Sometimes a ship has several decks at different levels. |
| disappointment |
the feeling of being unhappy because what was wished or hoped for did not happen. |
| fitness |
physical condition, especially the condition of one's muscles and heart. |
| gene |
a tiny section of a chromosome. A gene causes a particular characteristic, such as eye color or hair color, to be passed on from parent to offspring. |
| guitar |
a stringed instrument with a long neck and five, six, or twelve strings that are strummed or plucked. |
| index |
an alphabetical list of subjects, names, or other information in a book, with page numbers given for each item. |
| mesh |
a material or article made of fiber woven to form open spaces, as in a net. |
| optional |
left to someone's choice; not required. |
| outer |
of or having to do with the part most distant from the center. |
| reap |
to cut down and gather. |
| throb |
to beat or pulse quickly and strongly. |
| wardrobe |
a collection of clothes or costumes that is the property of one person or of a theater. |