The Collaborative International Dictionary of English v.0.48:

Apprentice \Ap*pren"tice\, n. [OE. apprentice, prentice, OF.
   aprentis, nom. of aprentif, fr. apprendare to learn, L.
   apprendere, equiv. to apprehendere, to take hold of (by the
   mind), to comprehend. See Apprehend, Prentice.]
   1. One who is bound by indentures or by legal agreement to
      serve a mechanic, or other person, for a certain time,
      with a view to learn the art, or trade, in which his
      master is bound to instruct him.
      [1913 Webster]

   2. One not well versed in a subject; a tyro.
      [1913 Webster]

   3. (Old law) A barrister, considered a learner of law till of
      sixteen years' standing, when he might be called to the
      rank of serjeant. [Obs.] --Blackstone.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Apprentice \Ap*pren"tice\, v. t. [imp. & p. p. Apprenticed; p.
   pr. & vb. n. Apprenticing.]
   To bind to, or put under the care of, a master, for the
   purpose of instruction in a trade or business.
   [1913 Webster]

WordNet (r) 3.0 (2006):

apprentice
    n 1: works for an expert to learn a trade [syn: apprentice,
         learner, prentice]
    v 1: be or work as an apprentice; "She apprenticed with the
         great master"

Moby Thesaurus II by Grady Ward, 1.0:

134 Moby Thesaurus words for "apprentice":
   abecedarian, alphabetarian, amateur, ancestors, apprenticed,
   architect, article, articled, articled clerk, artificer, artisan,
   artist, author, baby, begetter, beginner, bind, bind over, boot,
   bound over, break, break in, breed, bring up, builder, catechumen,
   colt, conceiver, condition, constructor, contract, craftsman,
   craftswoman, creator, cultivate, deb, debutant, designer, develop,
   deviser, discipline, discoverer, drill, effector, engenderer,
   engineer, entrant, executor, executrix, exercise, father, fetch up,
   fit, fledgling, form, foster, founder, freshman, generator,
   greenhorn, greeny, groom, grower, handicraftsman, house-train,
   housebreak, ignoramus, improve, inaugurator, indenture, indentured,
   inductee, industrialist, infant, initiate, initiator, instigator,
   institutor, introducer, inventor, journeyman, learner,
   lick into shape, maker, manufacturer, master, master carpenter,
   master craftsman, mechanic, mother, neophyte, nestling, new boy,
   newcomer, novice, novitiate, nurse, nurture, organizer, originator,
   past master, planner, postulant, practice, precursor, prentice,
   prepare, prime mover, probationer, probationist, producer,
   put in tune, put to school, raise, raiser, raw recruit, ready,
   realizer, rear, recruit, rehearse, rookie, send to school, shaper,
   sire, smith, starter, take in hand, technician, tenderfoot, train,
   trainee, tyro, wright



Bouvier's Law Dictionary, Revised 6th Ed (1856):

APPRENTICE, person, contracts. A person bound in due form of law to a
master, to learn from him his art, trade or business, and to serve him
during the time of his apprenticeship. (q.v.) 1 Bl. Com. 426; 2 Kent, Com.
211; 3 Rawle, Rep. 307; Chit. on Ap. 4 T. R. 735; Bouv. Inst. Index, h.t.
     2. Formerly the name of apprentice en la ley was given indiscriminately
to all students of law. In the reign of Edward IV. they were sometimes
called apprentice ad barras. And in some of the ancient law writers, the
term apprentice and barrister are synonymous. 2 Inst. 214; Eunom. Dial, 2,
Sec. 53, p. 155.