n.
The bristling of the body hair, as from fear or cold; goose bumps.
[Late Latin horripilātiō, horripilātiōn-, from Latin horripilātus, past participle of horripilāre, to bristle with hairs : horrēre, to tremble + pilāre, to grow hair (from pilus, hair).]
horripilate hor·rip'i·late' v.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.