the precise location of something; a spatially limited location

move into the center

the middle part of a slack rope (as distinguished from its ends)

the center of the circle of curvature

the center of the Earth

the center of a target

the point within something at which gravity can be considered to act; in uniform gravity it is equal to the center of mass

a nation in northern North America; the French were the first Europeans to settle in mainland Canada

a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom