cen·tral 
(sĕntrəl)
(sĕntrəl)adj.
1. Situated at, in, or near the center: the central states.
2. Forming the center.
3. Having dominant or controlling power or influence: the company's central office.
4. Of basic importance; essential or principal: "Performance, including technological invention and artistic creation, will become central to education at all levels" (Frederick Turner).
5. Easily reached from various points: a central location for the new store.
6. Of or constituting a single source controlling all components of a system: central air conditioning.
7. Anatomy
a. Of, relating to, or originating from the nervous system.
b. Relating to a centrum.
8. Linguistics Articulated in the middle of the oral cavity; neither front nor back. Used of vowels, as the u in cut.
9. Holding to a moderate ideological position between two extremes.
n.
1.
a. A telephone exchange.
b. An operator at a telephone exchange.
2.
a. A location or agency for the control or coordination of a group of related activities: air command central.
b. Informal A location or area of intense activity: Their apartment was party central on weekends.
[Latin centrālis, from centrum, center; see CENTER.]
central·ly adv.