ruler
NounWordNet 3.0
Webster's Dictionary (GCIDE)
Ruler \Rul"er\ (r[udd]l"[~e]r), n.
1.One who rules; one who exercises sway or authority; a governor. [1913 Webster]
And he made him ruler over all the land.— Gen. xli. 43.[1913 Webster]
A prince and ruler of the land.— Shak.[1913 Webster]
2.A straight or curved strip of wood, metal, etc., with a smooth edge, used for guiding a pen or pencil in drawing lines. Cf. Rule, n., 7 (a) . [1913 Webster]
Parallel ruler. See under Parallel. [1913 Webster]