I. ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: birth (I) + mark
1. : an unusual mark or blemish on the skin at birth : nevus
2. : a distinguishing characteristic or quality
words sang for him, and that is the birthmark of a poet — Dylan Thomas
II. transitive verb
: to fix a birthmark on — usually used passively