millstone

n 1 either of a pair of flat circular stones between which grain is ground 磨石; 磨盘. 2 (idm 习语) a millstone round one's/sb's `neck heavy burden or responsibility 沉重的负担或责任: My debts were like a millstone round my neck. 我欠的债像是在脖子上套著个磨盘.

millboard, millenarian, millennial, millennium, millepede (also millipede), miller, millet, milli-, milliard, millibar, millimeter, millimetre, milliner, millinery, million, million-, millionaire, millions of, millionth, millipede, millwright, milometer, milometer (also mileometer), milord, milt, mime, mimeograph, mimetic, mimic, mimic warfare, mimicked, mimicking, mimicry, mimosa, min, minaret, minatory, mince, mince pie, mincemeat,