Know how to use "fewer" and "less"? Find out.
1610s, "perceptible to touch," from French tactile, from Latin tactilis "tangible, that may be touched," from tactus, past participle of tangere "to touch" (see tangent). Meaning "of or pertaining to touch" is attested from 1650s.
tactile tac·tile (tāk'təl, -tīl')
Perceptible to the sense of touch; tangible.
Used for feeling.
Of, relating to, or proceeding from the sense of touch; tactual.