GNU Collaborative International Dictionary of English

Found one definition

1.       
   Limn , v. t. [imp. & p. p. Limned ; p. pr. & vb. n. Limning .] [OE. limnen, fr. luminen, for enluminen, F. enluminer to illuminate, to limn, LL. illuminare to paint. √122. See Illuminate, Luminous.]
   To draw or paint; especially, to represent in an artistic way with pencil or brush.
   1913 Webster
   Let a painter carelessly limn out a million of faces, and you shall find them all different.
   Sir T. Browne.
   
   1913 Webster
   Hence: To picture in words; to describe in graphic terms.
   PJC
   To illumine, as books or parchments, with ornamental figures, letters, or borders.
   1913 Webster