adjective Etymology: Latin pilus hair + nidus nest Date: 1880 of, relating to, or being a hair-containing cyst of the skin in the lower-back region near the upper crease of the buttocks
PILONIDAL
Meaning of PILONIDAL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012