The Collaborative International Dictionary of English v.0.48:

Instruct \In*struct"\, a. [L. instructus, p. p. of instruere to
   furnish, provide, construct, instruct; pref. in- in, on +
   struere. See Structure.]
   1. Arranged; furnished; provided. [Obs.] "He had neither ship
      instruct with oars, nor men." --Chapman.
      [1913 Webster]

   2. Instructed; taught; enlightened. [Obs.] --Milton.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Instruct \In*struct"\, v. t. [imp. & p. p. Instructed; p. pr.
   & vb. n. Instructing.]
   [1913 Webster]
   1. To put in order; to form; to prepare. [Obs.]
      [1913 Webster]

            They speak to the merits of a cause, after the
            proctor has prepared and instructed the same for a
            hearing.                              --Ayliffe.
      [1913 Webster]

   2. To form by communication of knowledge; to inform the mind
      of; to impart knowledge or information to; to enlighten;
      to teach; to discipline.
      [1913 Webster]

            Schoolmasters will I keep within my house,
            Fit to instruct her youth.            --Shak.
      [1913 Webster]

   3. To furnish with directions; to advise; to direct; to
      command; as, the judge instructs the jury.
      [1913 Webster]

            She, being before instructed of her mother, said,
            Give me here John Baptist's head in a charger.
                                                  --Matt. xiv.
                                                  8.
      [1913 Webster]

            Take her in; instruct her what she has to do.
                                                  --Shak.

   Syn: To teach; educate; inform; train; discipline;
        indoctrinate; direct; enjoin.
        [1913 Webster]

WordNet (r) 3.0 (2006):

instruct
    v 1: impart skills or knowledge to; "I taught them French"; "He
         instructed me in building a boat" [syn: teach, learn,
         instruct]
    2: give instructions or directions for some task; "She
       instructed the students to work on their pronunciation"
    3: make aware of; "Have the students been apprised of the
       tuition hike?" [syn: instruct, apprise, apprize]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "instruct":
   acquaint, advertise, advertise of, advise, advocate, apprise,
   assign, bid, brief, bring word, broaden the mind, call on,
   call the signals, call upon, catechize, charge, civilize, coach,
   command, commission, communicate, confer, consult with, counsel,
   declare, decree, define, demonstrate, dictate, direct, discipline,
   disclose, drill, edify, educate, engineer, enjoin, enlighten,
   familiarize, give an order, give instruction, give lessons in,
   give notice, give the facts, give the word, give word, ground,
   guide, illumine, importune, inculcate, indoctrinate, inform,
   issue a command, issue a writ, kibitz, lead, leave word, let know,
   mandate, meddle, mention to, notify, open the eyes, ordain, order,
   order about, pilot, prepare, prescribe, proclaim, promulgate,
   pronounce, propose, recommend, reeducate, report, require, rule,
   say the word, school, send word, serve notice, set right,
   sharpen the wits, show, show how, speak, steer, submit, suggest,
   teach, teach a lesson, teach the rudiments, tell, train, tutor,
   verse, warn