Source : Webster's Revised Unabridged Dictionary (1913)

Proboscidea \Pro`bos*cid"e*a\, n. pl. [NL. See {Proboscis}.]
   (Zo["o]l.)
   An order of large mammals including the elephants and
   mastodons.

Source : WordNet®

Proboscidea
     n 1: in some classifications included in the genus Martynia and
          hence the two taxonomic names for some of the unicorn
          plants [syn: {genus Proboscidea}]
     2: an order of animals including elephants and mammoths [syn: {order
        Proboscidea}]