Nevus
<B>1.</B> Any birthmark.<BR><B>2.</B> A benign pigmented spot on the skin such as a mole (a cluster of melanocytes and supportive tissue that appears as a tan, brown, or flesh-colored spot on the skin).<BR><B>3.</B> A benign blood vessel tumor on the skin such as a vascular nevus, a local collection of capillaries of the skin (a strawberry birthmark, stork mark, or port wine stain).
<BR>From the Latin naevus meaning a body mole, especially a birthmark.
The plural of nevus is nevi