The Collaborative International Dictionary of English v.0.48:

Specify \Spec"i*fy\, v. t. [imp. & p. p. Specified; p. pr. &
   vb. n. Specifying.] [F. sp['e]cifier, or OF. especifier,
   fr. LL. specificare. See Species, -fy.]
   To mention or name, as a particular thing; to designate in
   words so as to distinguish from other things; as, to specify
   the uses of a plant; to specify articles purchased.
   [1913 Webster]

         He has there given us an exact geography of Greece,
         where the countries and the uses of their soils are
         specified.                               --Pope.
   [1913 Webster]

WordNet (r) 3.0 (2006):

specify
    v 1: specify as a condition or requirement in a contract or
         agreement; make an express demand or provision in an
         agreement; "The will stipulates that she can live in the
         house for the rest of her life"; "The contract stipulates
         the dates of the payments" [syn: stipulate, qualify,
         condition, specify]
    2: decide upon or fix definitely; "fix the variables"; "specify
       the parameters" [syn: specify, set, determine,
       define, fix, limit]
    3: determine the essential quality of [syn: specify, define,
       delineate, delimit, delimitate]
    4: be specific about; "Could you please specify your criticism
       of my paper?" [syn: specify, particularize,
       particularise, specialize, specialise] [ant:
       generalise, generalize]
    5: define clearly; "I cannot narrow down the rules for this
       game" [syn: pin down, peg down, nail down, narrow
       down, narrow, specify]
    6: design or destine; "She was intended to become the director"
       [syn: intend, destine, designate, specify]
    7: select something or someone for a specific purpose; "The
       teacher assigned him to lead his classmates in the exercise"
       [syn: assign, specify, set apart]