The Collaborative International Dictionary of English v.0.48:

Execute \Ex"e*cute\, v. t. [imp. & p. p. Executed; p. pr. &
   vb. n. Executing.] [F. ex['e]cuter, L. executus, exsecutus,
   p. p. of exequi to follow to the end, pursue; ex out + sequi
   to follow. See Second, Sue to follow up, and cf.
   Exequy.]
   1. To follow out or through to the end; to carry out into
      complete effect; to complete; to finish; to effect; to
      perform.
      [1913 Webster]

            Why delays
            His hand to execute what his decree
            Fixed on this day?                    --Milton.
      [1913 Webster]

   2. To complete, as a legal instrument; to perform what is
      required to give validity to, as by signing and perhaps
      sealing and delivering; as, to execute a deed, lease,
      mortgage, will, etc.
      [1913 Webster]

   3. To give effect to; to do what is provided or required by;
      to perform the requirements or stipulations of; as, to
      execute a decree, judgment, writ, or process.
      [1913 Webster]

   4. To infect capital punishment on; to put to death in
      conformity to a legal sentence; as, to execute a traitor.
      [1913 Webster]

   5. To put to death illegally; to kill. [Obs.] --Shak.
      [1913 Webster]

   6. (Mus.) To perform, as a piece of music or other feat of
      skill, whether on an instrument or with the voice, or in
      any other manner requiring physical activity; as, to
      execute a difficult part brilliantly; to execute a coup;
      to execute a double play.

   Syn: To accomplish; effect; fulfill; achieve; consummate;
        finish; complete. See Accomplish.
        [1913 Webster]

WordNet (r) 3.0 (2006):

executed
    adj 1: put to death as punishment; "claimed the body of the
           executed traitor"

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "executed":
   accomplished, achieved, attained, brought about, caused, compassed,
   consummated, discharged, dispatched, disposed of, done, effected,
   effectuated, fulfilled, grown, implemented, made, mass-produced,
   performed, produced, raised, realized, set at rest, wrought,
   wrought out



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

EXECUTED. Something done; something completed. This word is frequently used
in connexion with others to designate a quality of such other words; as an
executed contract; an executed estate; an executed trust, &c. It is opposed
to executory.
     2. An executed contract is one which has been fulfilled; as, where the
buyer has paid thrice of the thing purchased by him. See Agreement.
     3. An executed estate is when there is vested in the grantee a present
and immediate right of present or future enjoyment; and in another sense,
the term applies to the time of enjoyment; and in that sense, an estate is
said to be executed, when it confers a present right of present enjoyment.
When the right of enjoyment in possession is to arise at a future period,
only, the estate is executed that is, it is merely vested in point of
interest: when the right of immediate enjoyment is annexed to the estate,
then only is the estate vested in possession. 1 Prest. on Est. 62.
     4. Trusts executed are, when by deed or will, lands are conveyed, or
devised, in terms or in effect, to and for the use of one person or several
persons, in trust for others, without any direction that the trustees shall
make any farther conveyance; so that it does not appear that the author of
the trusts had a view to a future instrument for accomplishing his
intention. Prest. on Est. 188.