To swerve from a straight line
An arc of lightning left her father's hand and slammed the stranger into the wall.
Holding out her arm, she was fascinated to see the rain arc to avoid it.
The shortest line joining any two points is an arc of a great circle.
Joan of Arc defeated the English here in 1429.
He emerged from the shadow world in a luxurious penthouse suite in Paris overlooking the Arc de Triomphe.