noun

1. That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.

2. A continuous part of the circumference of a circle (circular arc) or of another curve.

3. A curve, in general.

Synonyms: circle segment, circular arc, curve, swoop, arrow, directed edge

verb

1. To move following a curved path.

2. To shape into an arc; to hold in the form of an arc.

3. To form an electrical arc.