The point in the sky directly above the North Pole of the Earth. As the Earth turns around its axis of rotation, the sky appears to turn, in the opposite direction, about an axis through the North and South Celestial Poles.
the celestial pole above the northern hemisphere; near Polaris
The sky's north pole. The point in the sky directly above Earth's north pole.
(NCP): projection of the Earth's north pole onto the sky. The NCP altitude = the observer's northern latitude.
Point on the celestial sphere directly above the Earth's north pole.
A direction determined by the projection of the Earth's North Pole onto the celestial sphere. It corresponds to a declination of +90 degrees. The North Star, Polaris, sits roughly at the NCP.
From any place in the Northern Hemisphere, there is a point in the northern sky around which the stars appear to rotate. It is currently near Polaris, the Pole Star. There is an equivalent point in the southern hemisphere, although there is no significantly bright star to mark it.