Available Definitions:
1) n. - A short, stiff, coarse hair, as on the back of swine.
2) n. - A stiff, sharp, roundish hair.
3) v. t. - To erect the bristles of; to cause to stand up, as the bristles of an angry hog; -- sometimes with up.
4) v. t. - To fix a bristle to; as, to bristle a thread.
5) v. i. - To rise or stand erect, like bristles.
6) v. i. - To appear as if covered with bristles; to have standing, thick and erect, like bristles.
7) v. i. - To show defiance or indignation.