arc

definition: electrical conduction through a gas in an applied electric field
example:
speech part: noun
synonyms: discharge
definition: a continuous portion of a circle
example:
speech part: noun
synonyms:
definition: something curved in shape
example:
speech part: noun
synonyms: bow
definition: to an arch or curve
example: My back arcs at an unnatural angle.
speech part: verb
synonyms: curve

arc is explained and pronounced

How arc is being used?