'Birthmark' definitions:

Definition of 'birthmark'

From: WordNet
noun
A blemish on the skin that is formed before birth [syn: birthmark, nevus]

Definition of 'Birthmark'

From: GCIDE
  • Birthmark \Birth"mark`\, n. Some peculiar mark or blemish on the body at birth. [1913 Webster]
  • Most part of this noble lineage carried upon their body for a natural birthmark, . . . a snake. --Sir T. North. [1913 Webster]