The Collaborative International Dictionary of English v.0.48:

Scholar \Schol"ar\, n. [OE. scoler, AS. sc[=o]lere, fr. L.
   scholaris belonging to a school, fr. schola a school. See
   School.]
   1. One who attends a school; one who learns of a teacher; one
      under the tuition of a preceptor; a pupil; a disciple; a
      learner; a student.
      [1913 Webster]

            I am no breeching scholar in the schools. --Shak.
      [1913 Webster]

   2. One engaged in the pursuits of learning; a learned person;
      one versed in any branch, or in many branches, of
      knowledge; a person of high literary or scientific
      attainments; a savant. --Shak. Locke.
      [1913 Webster]

   3. A man of books. --Bacon.
      [1913 Webster]

   4. In English universities, an undergraduate who belongs to
      the foundation of a college, and receives support in part
      from its revenues.
      [1913 Webster]

   Syn: Pupil; learner; disciple.

   Usage: Scholar, Pupil. Scholar refers to the instruction,
          and pupil to the care and government, of a teacher. A
          scholar is one who is under instruction; a pupil is
          one who is under the immediate and personal care of an
          instructor; hence we speak of a bright scholar, and an
          obedient pupil.
          [1913 Webster]

WordNet (r) 3.0 (2006):

scholar
    n 1: a learned person (especially in the humanities); someone
         who by long study has gained mastery in one or more
         disciplines [syn: scholar, scholarly person, bookman,
         student]
    2: someone (especially a child) who learns (as from a teacher)
       or takes up knowledge or beliefs [syn: learner, scholar,
       assimilator]
    3: a student who holds a scholarship