| one of the parallel filaments projecting from the main shaft of a feather | the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft |
| a subsidiary point facing opposite from the main point that makes an arrowhead or spear hard to remove | mechanical device attached to an elevated structure; rotates freely to show the direction of the wind |
| the pointed part of barbed wire | flat surface that rotates and pushes against air or water |
| an aggressive remark directed at a person like a missile and intended to have a telling effect | a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it |