any highly sensitive hair of an animal, as the whiskers of a cat or hairs on a hedgehog's snout.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for tactile hair
A hair or hairlike structure that is highly sensitive to pressure or touch. Tactile hairs help organisms sense their environment. They cover the bodies of most insects and are found in many mammals, especially as whiskers.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.