# Mongolian spot

> English word · Noun

## Definitions
1. A benign, flat, congenital, usually blue to blue-black birthmark on the lower back with wavy borders and irregular shape, prevalent among East Asians, South-East Asians, Polynesians, Native Americans, East Africans, and the Turkish people. It normally disappears three to five years after birth and almost always by puberty.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/mongolian-spot