[1] : The Collaborative International Dictionary of English v.0.48

monarch butterfly \mon"arch but"terfly\, 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
see also:
danais plexippus milkweed butterfly monarch 

[2] : The Collaborative International Dictionary of English v.0.48

monarch \mon"arch\, n. f. monarque, l. monarcha, fr. gr. ?, ?;
   mo`nos alone + ? to be first, rule, govern. see archi-.
   1. 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

   2. one superior to all others of the same kind; as, an oak is
      called the monarch of the forest.
      1913 webster

   3. a patron deity or presiding genius.
      1913 webster

            come, thou, monarch of the vine,
            plumpy bacchus.                       --shak.
      1913 webster

   4. zool. a very large red and black butterfly danais
      plexippus; -- called also milkweed butterfly and
      monarch butterfly.
      1913 webster
see also:
archi- danais plexippus milkweed butterfly monarch butterfly 

[3] : WordNet (r) 2.0

monarch butterfly
     n : large migratory american butterfly having deep orange wings
         with black and white markings; the larvae feed on
         milkweed syn: monarch, milkweed butterfly, danaus
         plexippus
see also:
monarch milkweed butterfly danaus plexippus 

Monarch >> M Words
Monarch, definition of term: Monarch
monarch_pag1.html

Butterfly >> B Words
Butterfly, definition of term: Butterfly
butterfly_pag1.html

Monarch Butterf >> M Words
Monarch Butterf, definition of term: Monarch Butterf
monarch+butterf_pag1.html

Butterfly Fish >> B Words
Butterfly Fish, definition of term: Butterfly Fish
butterfly+fish_pag1.html

Butterfly Bush >> B Words
Butterfly Bush, definition of term: Butterfly Bush
butterfly+bush_pag1.html

Sea Butterfly >> S Words
Sea Butterfly, definition of term: Sea Butterfly
sea+butterfly_pag1.html