Cork, or the corresponding layer of woody tissue below the epidermis of a plant.
{{quote-book|en|year=1869|author=Louis Figuier|title=The Vegetable World|page=39|pageurl=http://books.google.com/books?id=4AgPAAAAYAAJ&pg=PA39
(l)
oak, cork-tree
cork
on, top of, above
(syn)