a circular object that revolves on an axle and is fixed below a vehicle or other object to enable it to move easily over the ground. "a chair on wheels"
a machine or structure having a wheel as its essential part.
informal (wheels) a car. "she's got wheels now"
VERB
push or pull (a vehicle with wheels). "the sled was wheeled out to the flight deck"
(of a bird or aircraft) fly in a wide circle or curve. "the birds wheeled and dived"
Door definition:
NOUN
a hinged, sliding, or revolving barrier at the entrance to a building, room, or vehicle, or in the framework of a cupboard. "she looked for her key and opened the door" ·
a doorway. "she walked through the door"
used to refer to the distance from one building in a row to another. "they lived within three doors of each other"
Are there doors in nature? Does a Door Spider use doors? Does a Box Turtle have built in doors? Is the act of any animal covering the entrance to it's nest or hive count as a door?
How about clams and mussels? There are probably more zebra mussels in Lake Michigan than wheels in the world.
But guys... What about heelys. I know as programmers we each have 10-12 pairs of heelys in our closet. How else would we exit an engineers office after telling them they are wrong?