The Collaborative International Dictionary of English v.0.48:

Identic \I*den"tic\, Identical \I*den"tic*al\, a.
   In diplomacy (esp. in the form identic), precisely agreeing
   in sentiment or opinion and form or manner of expression; --
   applied to concerted action or language which is used by two
   or more governments in treating with another government.
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Identical \I*den"tic*al\, a. [Cf. F. identique. See Identity.]
   1. The same; the selfsame; the very same; not different; as,
      the identical person or thing.
      [1913 Webster]

            I can not remember a thing that happened a year ago,
            without a conviction . . . that I, the same
            identical person who now remember that event, did
            then exist.                           --Reid.
      [1913 Webster]

   2. Uttering sameness or the same truth; expressing in the
      predicate what is given, or obviously implied, in the
      subject; tautological.
      [1913 Webster]

            When you say body is solid, I say that you make an
            identical proposition, because it is impossible to
            have the idea of body without that of solidity.
                                                  --Fleming.
      [1913 Webster]

   Identical equation (Alg.), an equation which is true for
      all values of the algebraic symbols which enter into it.
      [1913 Webster] Identic

WordNet (r) 3.0 (2006):

identical
    adj 1: exactly alike; incapable of being perceived as different;
           "rows of identical houses"; "cars identical except for
           their license plates"; "they wore indistinguishable hats"
           [syn: identical, indistinguishable]
    2: being the exact same one; not any other:; "this is the
       identical room we stayed in before"; "the themes of his
       stories are one and the same"; "saw the selfsame quotation in
       two newspapers"; "on this very spot"; "the very thing he said
       yesterday"; "the very man I want to see" [syn: identical,
       selfsame(a), very(a)]
    3: (of twins) derived from a single egg or ovum; "identical
       twins are monovular" [syn: identical, monovular] [ant:
       biovular, fraternal]
    4: having properties with uniform values along all axes
    5: coinciding exactly when superimposed; "identical triangles"
       [syn: identical, superposable]

Moby Thesaurus II by Grady Ward, 1.0:

76 Moby Thesaurus words for "identical":
   alike, all one, all the same, aped, biform, bifurcated, bilateral,
   bipartisan, bipartite, coequal, comparable, consimilar,
   consubstantial, convertible, coordinate, copied, correspondent,
   corresponding, counterfeit, dichotomous, double, duadic, dual,
   dualistic, duplex, duplicate, duplicated, dyadic, equal,
   equiparant, equipollent, equivalent, ersatz, exact, exactly alike,
   fake, favoring, following, homogeneous, homoousian, identic,
   imitated, imitation, indistinguishable, interchangeable,
   just alike, like, matched, matching, mimicked, mock, much the same,
   nearly reproduced, not unlike, one, phony, resembling, same,
   selfsame, similar, simulated, smacking of, something like,
   suggestive of, synthetic, tantamount, twain, twin, twinned, two,
   two-sided, undifferent, uniform with, very, without difference,
   without distinction