Definitions for "monarch butterfly"
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.
A type of butterfly common in North America. http://www.learner.org/jnorth/sm/aboutmbsf.html
large migratory American butterfly having deep orange wings with black and white markings; the larvae feed on milkweed