n. 25B6; adjective
occupying a central position : MIDDLE, centre, halfway, midway, mid, median, medial, mean; Anatomy mesial.
central London : INNER, innermost, middle, mid.
their central campaign issue : MAIN, chief, principal, primary, leading, foremost, first, most important, predominant, dominant, key, crucial, vital, essential, basic, fundamental, core, prime, premier, paramount, major, overriding; informal number-one.
side, outer, subordinate.