The Collaborative International Dictionary of English v.0.48:

Superintendent \Su`per*in*tend"ent\, a. [L. superintendens, p.
   pr. See Superintend.]
   Overseeing; superintending.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Superintendent \Su`per*in*tend"ent\, n. [Cf. OF. superintendant,
   F. surintendant. Cf. Surintendant.]
   One who has the oversight and charge of some place,
   institution, or organization, affairs, etc., with the power
   of direction; as, the superintendent of an almshouse; the
   superintendent of public works.
   [1913 Webster]

   Syn: Inspector; overseer; manager; director; curator;
        supervisor.
        [1913 Webster]

WordNet (r) 3.0 (2006):

superintendent
    n 1: a person who directs and manages an organization [syn:
         overseer, superintendent]
    2: a caretaker for an apartment house; represents the owner as
       janitor and rent collector [syn: superintendent, super]