petty spurge(n = noun.plant) devil's milk, euphorbia peplus - an Old World spurge introduced as a weed in the eastern United States;
is a kind of spurge
is a member of euphorbia, genus euphorbia

allegheny mountain spurge, allegheny spurge, caper spurge, chief petty officer, cypress spurge, dwarf spurge, flowering spurge, hairy spurge, japanese spurge, leafy spurge, myrtle spurge, petty, petty apartheid, petty bourgeoisie, petty cash, petty criticism, petty juror, petty jury, petty larceny, petty morel, petty officer, petty whin, slipper spurge, spurge, spurge family, spurge laurel, spurge nettle, sun spurge, toothed spurge, tramp's spurge, wild spurge, wood spurge