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1. A stiff hair.
2. A stiff hairlike structure: the bristles of a wire brush.
v. bris·tled, bris·tling, bris·tles
To stand stiffly on end like bristles: The hair on the dog's neck bristled.
1. To cause to stand erect like bristles; stiffen.
2. To furnish or supply with bristles.
noun Stiff, strong hair.
verb To react angrily as a situation; seethe.
Traditionally, individual short, stiff, natural hair of an animal taken from domestic swine or wild boars, but today most toothbrush bristles are made of nylon and thus are more properly called filaments.
1. the thick strong animal fibers collected at commercial abattoirs for use in brushes.
2. the sharp serrated awns of grass and some cereal seeds that confer a capacity to penetrate normal skin and mucosa and to cause ulcerative stomatitis, grass seed abscess and the like.