arc
noun [C]
(the shape of) part of a circle, or other
curved line
The crowd watched as the ball rose in a
high arc and fell behind the boundary line.
They dug out the soil in an arc stretching
about 4 metres from the wall.
The agricultural land spreading out in
a 100-mile arc from the city is extremely fertile.
arc
verb [I]
The rocket arced gracefully (=moved in
the shape of an arc) into the sky.
(Cited from Cambridge
International Dictionary of English.)