Is central a word in the Scrabble Dictionary

Yes, central is playable

...and is worth 12 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Central" Definition

noun

A telephone exchange.
An office or agency at the center of a group of related activities that serves to control and coordinate them: traffic central.
An operator at a telephone exchange.
A or hub for a specified activity or group .
A central office or bureau usually controlling others .

adjective

Anatomy Of, relating to, or originating from the nervous system.
Anatomy Relating to a centrum.
Easily reached from various points: a central location for the new store.
Forming the center.
Holding to a moderate ideological position between two extremes.