GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Monarch , n. [F. monarque, L. monarcha, fr. Gr. , ; μόνος alone +  to be first, rule, govern. See Archi-.]
   A sole or supreme ruler; a sovereign; the highest ruler; an emperor, king, queen, prince, or chief.
   1913 Webster
   He who reigns
   Monarch in heaven, . . . upheld by old repute.
   Milton.
   
   1913 Webster
   One superior to all others of the same kind; as, an oak is called the monarch of the forest.
   1913 Webster
   A patron deity or presiding genius.
   1913 Webster
   Come, thou, monarch of the vine,
   Plumpy Bacchus.
   Shak.
   
   1913 Webster
   (Zool.) A very large red and black butterfly (Danais Plexippus); -- called also milkweed butterfly and monarch butterfly.
   1913 Webster
         
       

2.       
   monarch butterfly, n. (Zool.) A very large red and black butterfly (Danais Plexippus) having striking orange-brown wings with black veins in a reticulated pattern; -- called also milkweed butterfly and monarch.  Its larvae feed on the leaves of the milkweed.
   1913 Webster
   +PJC