Ferris wheel

n.

An amusement ride consisting of a large upright rotating wheel having suspended seats that remain in a horizontal position as the wheel revolves.

After George Washington Gale Ferris (1859-1896), American engineer.

Recent large Ferris wheels have been marketed as observation wheels.

dart

n.

A slender, pointed missile, often having tail fins, thrown by hand, shot from a blowgun, or expelled by an exploding bomb.

boomerang

n.

A flat, curved, usually wooden missile configured so that when hurled it returns to the thrower.

Synonyms:

throw stick, throwing stick.