Definition of center:
(n) :
the
middle portion of something; the part well away from the
edges; the point on a line that is
midway between the
ends
"shopping center;"
(adj) :
of, at, or related to a center
(v) :
to cause (an object) to occupy the center of an area; to cause (some
attribute, such as a
mood or
voltage) to be adjusted to a value which is midway between the
extremes