Source : Webster's Revised Unabridged Dictionary (1913)

Tutor \Tu"tor\, v. t. [imp. & p. p. {Tutored}; p. pr. & vb. n.
   {Tutoring}.]
   1. To have the guardianship or care of; to teach; to
      instruct.

            Their sons are well tutored by you.   --Shak.

   2. To play the tutor toward; to treat with authority or
      severity. --Addison.

Tutor \Tu"tor\, n. [OE. tutour, L. tutor, fr. tueri to watch,
   defend: cf. F. tuteur. Cf. {Tuition}.]
   One who guards, protects, watches over, or has the care of,
   some person or thing. Specifically:
   (a) A treasurer; a keeper. ``Tutour of your treasure.''
       --Piers Plowman.
   (b) (Civ. Law) One who has the charge of a child or pupil and
       his estate; a guardian.
   (c) A private or public teacher.
   (d) (Eng. Universities) An officer or member of some hall,
       who instructs students, and is responsible for their
       discipline.
   (e) (Am. Colleges) An instructor of a lower rank than a
       professor.

Source : WordNet®

tutor
     n : a person who gives private instruction (as in singing or
         acting) [syn: {coach}, {private instructor}]

tutor
     v 1: be a tutor to someone; give individual instruction; "She
          tutored me in Spanish"
     2: act as a guardian to someone

Source : Free On-Line Dictionary of Computing

TUTOR
     
        A Scripting language on {PLATO} systems from {CDC}.
     
        ["The TUTOR Language", Bruce Sherwood, Control Data, 1977].