The Collaborative International Dictionary of English v.0.48:
Proboscidean \Pro`bos*cid"e*an\, a. (Zool.) Proboscidian. [1913 Webster]WordNet (r) 3.0 (2006):
proboscidean n 1: massive herbivorous mammals having tusks and a long trunk [syn: proboscidean, proboscidian]