{n} a vertical circle of a place or the point in which such a circle intersects the horizon, a point of compass
{i} one of the 32 points on a mariner's compass; rhumb line, curved line on a sphere representing the path of a boat or plane traveling at a constant compass direction
a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
A line which crosses successive meridians at a constant angle; called also rhumb line, and loxodromic curve