from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having body hairs which have grown in a concentrated area on the skin and formed a cyst or abscess.
from The Century Dictionary and Cyclopedia
- Noting a bunch of hair arranged in the shape of a nest: as, a pilonidal cyst or sinus, that is, a dermoid cyst or sinus containing hair arranged in the form of a wad.
From Latin pilus ("hair") and nidus ("nest") (Wiktionary)