limn (LIM) - v., to draw or paint, depict; to portray in words.
Originally, to illuminate a manuscript, especially with gold leaf but in general to add decoration, such as elaborate initial capitals or illustrations -- and indeed, that's the etymology, a shortening via Anglo-Normal of Latin illūminō, to brighten/adorn. The potrayal in words is a metaphoric extension of the portrayal in art.

Thanks, WikiMedia!
---L.
Originally, to illuminate a manuscript, especially with gold leaf but in general to add decoration, such as elaborate initial capitals or illustrations -- and indeed, that's the etymology, a shortening via Anglo-Normal of Latin illūminō, to brighten/adorn. The potrayal in words is a metaphoric extension of the portrayal in art.
Thanks, WikiMedia!
---L.