serration

Noun
  1. The condition of being serrated (synset 114592202)
    "the serrations of a city skyline"
  2. A row of notches (synset 108448610)
    "the pliers had serrations to improve the grip"
  3. A single notch in a row of notches (synset 104181766)
    "one of the serrations was broken off"

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