Proper noun

1. A large aquatic creature, similar to the Loch Ness monster, which supposedly lives in Lake Simcoe, Ontario, Canada.
   • 1963, "Igopogo, Simcoe Monster, Reported Sighted Again," The Globe and Mail, Mon 1 July 1963, p. 1.

     The story of Lake Simcoe's monster started 11 years ago, when Wellington Charles, a fishing guide on the lake for many years, first sighted a mysterious marine animal. He described it as having a neck like a stovepipe with a face like a boxer dog. At the time, he named the thing Igopogo.