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• n  the condition of being serrated
  the serrations of a city skyline
• n  a row of notches
  the pliers had serrations to improve the grip
• n  a single notch in a row of notches
  one of the serrations was broken off

• From the same spot, you can also see a bit of the Sawtooth Ridge that snakes through the heart of the white Trinities, linking together a knife-edge serration of granite peaks .
• But they'd have had to open her up if it had been a five-pence piece, something to do with the serration or the size.
• The Sawtooth Ridge cuts through the heart of the white Trinities, linking together a knife-edge serration of granite peaks overlooking more than a dozen lakes.