petty whin(n = noun.plant) broom tree, genista anglica, needle furze - prickly yellow-flowered shrub of the moors of New England and Europe;
is a kind of broom
is a member of genista, genus genista

chief petty officer, petty, petty apartheid, petty bourgeoisie, petty cash, petty criticism, petty juror, petty jury, petty larceny, petty morel, petty officer, petty spurge, whin