shankbone (??æ?k?b??n) n (Zoology) non-technical a large bone in the lower leg between the knee and the foot of an animal; the tibiaCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014