tropaeolum (tr???pi??l?m) n, pl -lums or -la (-l?) (Plants) any garden plant of the genus Tropaeolum esp the nasturtium[C18: from New Latin, from Latin tropaeum trophy; referring to the shield-shaped leaves and helmet-shaped flowers]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014