bell sheep
n (Agriculture) Austral a sheep that a shearer is just starting to shear (and which he is allowed to finish) as the bell rings for the end of a work period
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014