Barb

1. n. A hair or bristle ending in a double hook.
2. n. Beard, or that which resembles it, or grows in the place of it.
3. n. A muffler, worn by nuns and mourners.
4. n. Paps, or little projections, of the mucous membrane, which mark the opening of the submaxillary glands under the tongue in horses and cattle. The name is mostly applied when the barbs are inflamed and swollen.
5. n. The point that stands backward in an arrow, fishhook, etc., to prevent it from being easily extracted. Hence: Anything which stands out with a sharp point obliquely or crosswise to something else.
6. n. A bit for a horse.
7. n. One of the side branches of a feather, which collectively constitute the vane. See Feather.
8. n. A southern name for the kingfishes of the eastern and southeastern coasts of the United States; — also improperly called whiting.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.