Limner is an archaic term for an artist who creates illuminated manuscripts or paints portraits. The word derives from the Old French word "lumineur", which means "illuminator". Limners typically worked on vellum or parchment, using watercolors or tempera paint to create their artwork. They often decorated the pages of manuscripts with intricate borders and illustrations, and they also painted portraits of important people. Limning was a highly skilled art form, and limners were highly respected for their work.
The term "limned" is the past participle of the verb "to lim". It can be used to describe something that has been drawn or painted, or it can be used to describe something that is very detailed or vivid. For example, you might say that a landscape is "limned with trees" or that a painting is "limned with details".