磨牙

móyá
  1. to grind one's teeth (during sleep)
  2. pointless arguing
  3. (coll.) molar

CEDICT

colloquial

Entry Composition

1 磨 mó
  1. to rub
  2. to grind
  3. to polish
  4. to sharpen
  5. to wear down
  6. to die out
  7. to waste time
  8. to pester
  9. to insist
2 牙 yá
  1. tooth
  2. ivory

classifier: 顆