a millstone round (one's) neck(redirected from a millstone round their necks)
a millstone round (one's) neck
An extremely difficult or disadvantageous burden or hindrance. I wish I hadn't bought that house—the mortgage has been nothing but a millstone round my neck. Given the man's laundry list of scandals, he's proving to be quite a millstone round the candidate's neck.
a millstone round your necka very severe impediment or disadvantage.
A millstone was a large circular stone used to grind corn. The phrase alludes to a method of executing people by throwing them into deep water with a heavy stone attached to them, a fate believed to have been suffered by several early Christian martyrs.