What is "witch elm"

n. Eurasian elm often planted as a shade tree [syn: wych elm, Ulmus glabra]

Witch Elm (1904–1923) was a Thoroughbred racehorse owned by the William Hall Walker and trained by Jack Robinson. She was a daughter of Orme, who won the Eclipse Stakes twice and her dam was Cannie Lass, who was a daughter of Ayrshire.