millstone

/ˌmɪlˈstoʊn/

Other forms: millstones

Definitions of millstone

1. noun

   one of a pair of heavy flat disk-shaped stones that are rotated against one another to grind the grain
   type of:

   stone

   building material consisting of a piece of rock hewn in a definite shape for a special purpose
2. noun

   any load that is difficult to carry
   type of:

   burden, load, loading

   weight to be borne or conveyed
3. noun

   (figurative) something that hinders or handicaps
   synonyms: albatross

   type of:

   balk, baulk, check, deterrent, handicap, hinderance, hindrance, impediment

   something immaterial that interferes with or delays action or progress