What does the word lichen mean?

Usage examples for lichen

  1. But they remained where they were, the girl framed by the doorway, the lithe little figure in khaki and lichen- coloured helmet looking up at her from the foot of the two front steps. – The Rough Road by William John Locke
  2. Sometimes, especially at the base of the nest, a little moss is attached exteriorly, but, as a rule, there is nothing but lichen. – The Nests and Eggs of Indian Birds, Volume 1 by Allan O. Hume
  3. Moss and green lichen had been scoured from the bases of the great weather- beaten pillars. – The Valiants of Virginia by Hallie Erminie Rives