naevus

Etymology
Borrowed from.

Noun

 * 1)  A pigmented, raised or otherwise abnormal area on the skin, whether congenital or acquired.

Etymology
.

Noun

 * 1) nevus benign tumor on skin

Usage notes
This word is mainly known to and thus used by the medical professionals.

Etymology
For gnaevus, from, from. Probable doublet of.

Noun

 * 1) birthmark
 * 2) mole (on the body)