- a leguminous plant, Trifolium campestre, of N temperate grasslands, with globular yellow flower heads and trifoliate leavesUS and Canadian name: hop clover
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
Examples from the Web for hop trefoil
The hop-trefoil is a favourite crop for sheep, but Hilary said it was too soft for horses.
It arose from the yellow flower of the hop-trefoil: honey sometimes has a flavour which resembles it.