| a grounder that bounces high in the air | the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft |
| a butcher's knife having a large square blade | mechanical device attached to an elevated structure; rotates freely to show the direction of the wind |
| an aircraft without wings that obtains its lift from the rotation of overhead blades | flat surface that rotates and pushes against air or water |
| informal terms for a human `tooth' | a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it |