cardinal point

plural noun

1. the four chief directions of the compass; the north, south, east, and west points.

pl n

1. the four main points of the compass: north, south, east, and west

n.

1. One of four points in the pelvic inlet toward which the occiput of the fetus is usually directed in cases of head presentation.
2. Any of six reference points in the eye: the anterior focal point, posterior focal point, two principal points, and two nodal points.

1. One of the four principal directions on a compass (north, south, east, or west).