- a large birthmark of purplish color, usually on the face or neck.
Origin of port-wine stain
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A purplish area of the skin, usually on the head and neck, appearing at birth and caused by an overgrowth of the cutaneous capillaries.nevus flammeus port-wine mark
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.