The Collaborative International Dictionary of English v.0.48:

Restrict \Re*strict"\, a. [L. restrictus, p. p. of restringere.
   See Restrain.]
   Restricted. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Restrict \Re*strict"\, v. t. [imp. & p. p. Restricted; p. pr.
   & vb. n. Restricting.]
   To restrain within bounds; to limit; to confine; as, to
   restrict worlds to a particular meaning; to restrict a
   patient to a certain diet.
   [1913 Webster]

   Syn: To limit; bound; circumscribe; restrain; repress; curb;
        coerce.
        [1913 Webster]

WordNet (r) 3.0 (2006):

restrict
    v 1: place restrictions on; "curtail drinking in school" [syn:
         restrict, curtail, curb, cut back]
    2: place under restrictions; limit access to; "This substance is
       controlled" [ant: derestrict]
    3: place limits on (extent or access); "restrict the use of this
       parking lot"; "limit the time you can spend with your
       friends" [syn: restrict, restrain, trammel, limit,
       bound, confine, throttle]
    4: make more specific; "qualify these remarks" [syn: qualify,
       restrict]

Moby Thesaurus II by Grady Ward, 1.0:

130 Moby Thesaurus words for "restrict":
   abate, adjust to, allocate, allot, alter, appoint, appropriate to,
   assign, assign to, assuage, bar, be into, be strong in, bind,
   bottle up, bound, box, box in, box up, cage, check, circumscribe,
   cloister, condition, confine, constrain, constrict, contain,
   contract, coop, coop in, coop up, copyright, cork up, cramp, crib,
   delimit, delimitate, demarcate, destine, detail, detain, diminish,
   discipline, draw in, draw the line, earmark, encage, enclose, fate,
   feature, fence in, follow, go in, go in for, hedge, hedge about,
   hem, hem in, hold, hold in custody, hold in restraint, immure,
   impede, impound, inhibit, keep from spreading, keep in,
   keep in custody, keep in detention, keep within bounds, leaven,
   limit, localize, lot, major in, make assignments, mark off,
   mark out for, mew, mew up, minor in, mitigate, moderate, modify,
   modulate, narrow, ordain, palliate, patent, pen, pen up,
   portion off, pound, pursue, qualify, rail in, reduce, register,
   regulate, regulate by, reserve, restrain, restrict to, scant,
   schedule, seal up, season, set, set apart, set aside,
   set conditions, set limits, set off, shackle, shrink, shut in,
   shut up, snape, soften, specialize, specialize in, stint, straiten,
   tag, taper, temper, tie, tighten, wall in