mill-wheel

n wheel used to drive a water-mill （带动水磨的）水轮.

milk shake, milk-float, milk-loaf, milk-tooth, milk-white, milker, milkiness, milking-machine, milkmaid, milkman, milksop, milkweed, milky, Milky Way, mill, mill-dam, mill-hand, mill-owner, mill-pond, mill-race, millboard, millenarian, millennial, millennium, millepede (also millipede), miller, millet, milli-, milliard, millibar, millimeter, millimetre, milliner, millinery, million, million-, millionaire, millions of, millionth, millipede,