MEANING:
noun: The small fleshy projection at the front of the external ear, slightly extending over the opening of the ear.
ETYMOLOGY:
From Greek tragos (goat; hairy part of the ear), from the supposed resemblance of the tuft of hair at the opening of the ear to a goat's beard. The word is sometimes also applied to this hair growing in the ear. Earliest documented use: 1684.
USAGE:
"Rich Lee, a 34-year-old American, had magnets implanted in the tragus ... that act as speakers when combined with a coil necklace."
I've Got You Under My Skin; Independent (South Africa); Aug 7, 2013.