From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( p. pr. & vb. n.) of Rule

(2): ( n.) A decision or rule of a judge or a court, especially an oral decision, as in excluding evidence.

(3): ( n.) The act of one who rules; ruled lines.

(4): ( a.) Used in marking or engraving lines; as, a ruling machine or pen.

(5): ( a.) Predominant; chief; reigning; controlling; as, a ruling passion; a ruling sovereign.

King James Dictionary [2]

Ru'Ling, ppr.

1. Governing controlling the will and actions of intelligent beings, or the movements of other physical bodies. 2. Marking by a ruler. 3. Deciding determining. 4. a. Predominant chief controlling as a ruling passion.