Definition of Arc

Noun

• something curved in shape
  bow
• a continuous portion of a circle
  
• electrical conduction through a gas in an applied electric field
  discharge spark - electric arc - electric discharge

Verb

• form an arch or curve
  "her back arches"
  "her hips curve nicely"
  arch curve

• Scrabble® score of the arc (5)
• Word Chums® score of the arc (8)
• Words With Friends® score of the arc (6)