'eyeliner' definitions:

Definition of 'eyeliner'

(from WordNet)
noun
Makeup applied to emphasize the shape of the eyes

Definition of 'eyeliner'

From: GCIDE
  • eyeliner \eye"lin`er\ ([imac]"l[imac]`n[~e]r), n. a cosmetic powder of a dark tint, applied to the eyelid close to the base of the eyelashes to accentuate the eyes. Compare eye shadow. [PJC]