shanks's pony

US and Canadian shanks's mare

Word Origin for shanks's pony

C18: from shank (in the sense: lower leg); probably with a pun on the surname Shanks
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012