vt, ground  grind*ing  1  :  to reduce to powder or small fragments by friction (as with the teeth)  2  :  to press together and move with a rotating or back-and-forth motion - see BRUXISM  .
 
 
 
Similar sounding terms:  car·i·nate  cor·o·net  cor·o·noid  cra·ni·ad 
 
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