trifolium(n = noun.plant) genus trifolium - any leguminous plant having leaves divided into three leaflets;
is a kind of rosid dicot genus
is a member of fabaceae, family fabaceae, family leguminosae, legume family, leguminosae, pea family

   A genus of leguminous herbs with densely spiked flowers and usually trifoliate leaves; trefoil. There are many species, all of which are called clover. See Clover. [1913 Webster]

genus trifolium, trifolium alpinum, trifolium dubium, trifolium incarnatum, trifolium pratense, trifolium reflexum, trifolium repens, trifolium stoloniferum