The Collaborative International Dictionary of English v.0.48:

Paraclete \Par"a*clete\, n. [L. paracletus, Gr. para`klhtos,
   from parakalei^n to call to one, to exhort, encourage; para`
   beside + kalei^n to call.]
   An advocate; one called to aid or support; hence, the
   Consoler, Comforter, or Intercessor; -- a term applied to the
   Holy Spirit.
   [1913 Webster]

         From which intercession especially I conceive he hath
         the name of the Paraclete given him by Christ. --Bp.
                                                  Pearson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Paraclete
    n 1: the third person in the Trinity; Jesus promised the
         Apostles that he would send the Holy Spirit after his
         Crucifixion and Resurrection; it came on Pentecost [syn:
         Holy Ghost, Holy Spirit, Paraclete]