Leaf. A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants.eaf (noun). something which is like a leaf in being wide and thin and having a flat surface, or in being attached to a larger body by one edge or end; as : (a) A part of a book or folded sheet containing two pages upon its opposite sides.
Production on Vikings season 4 is set to begin this spring in Ireland (presumably for an early 2016 premiere), while its third season will wrap up in about a month, on April 23rd.
Vikings will end its third season run on Thursday, April 23, at 10 p.m. on History. Below is the full synopsis of the episode: With one last chance to take Paris, Ragnar and his Viking troops take a daring chance.Ragnar asks Bjorn for a favor that could change the course of Viking history..nd based on the promo video for the Season 3 finale, titled The Dead, Ragnar's people will turn against him as he's abandoned the Viking belief. No Christian king will ever be allowed to rule our world, one character says in the trailer shown below.