Source : Webster's Revised Unabridged Dictionary (1913)

Include \In*clude"\, v. t. [imp. & p. p. {Included}; p. pr. &
   vb. n. {Including}.] [L. includere, inclusum; pref. in- in +
   claudere to shut. See {Close}, and cf. {Enclose}.]
   1. To confine within; to hold; to contain; to shut up; to
      inclose; as, the shell of a nut includes the kernel; a
      pearl is included in a shell.

   2. To comprehend or comprise, as a genus the species, the
      whole a part, an argument or reason the inference; to
      contain; to embrace; as, this volume of Shakespeare
      includes his sonnets; he was included in the invitation to
      the family; to and including page twenty-five.

Included \In*clud"ed\, a.
   Inclosed; confined.

   {Included stamens} (Bot.), such as are shorter than the
      floral envelopes, or are concealed within them.

Source : WordNet®

included
     adj : enclosed in the same envelope or package; "the included
           check"