flowers of zinc(n = noun.substance) philosopher's wool, philosophers' wool, zinc oxide - oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment;
is a kind of oxide

bed of flowers, flowers, zinc, zinc blende, zinc cadmium sulfide, zinc deficiency, zinc ointment, zinc oxide, zinc sulfate, zinc sulphate, zinc vitriol, zinc white