The Collaborative International Dictionary of English v.0.48:
Tarpan \Tar"pan\, n. [From the native name.] (Zool.) A wild horse found in the region of the Caspian Sea. [1913 Webster]WordNet (r) 3.0 (2006):
tarpan n 1: European wild horse extinct since the early 20th century [syn: tarpan, Equus caballus gomelini]