The Collaborative International Dictionary of English v.0.48:

Paean \P[ae]"an\ (p[=e]`an), n. [L. paean, Gr. paia`n, fr.
   Paia`n the physician of the gods, later, Apollo. Cf.
   P[ae]on, Peony.] [Written also pean.]
   1. An ancient Greek hymn in honor of Apollo as a healing
      deity, and, later, a song addressed to other deities.
      [1913 Webster]

   2. Any loud and joyous song; a song of triumph, joy, or
      praise. --Dryden. "Public p[ae]ans of congratulation."
      --De Quincey.
      [1913 Webster]

   3. See P[ae]on.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pean \Pe"an\ (p[=e]"an), n.
   A song of praise and triumph. See P[ae]an.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pean \Pean\ (p[=e]n), n. [OF. pene, F. panne.] (Her.)
   One of the furs, the ground being sable, and the spots or
   tufts or.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pean
    n 1: (ancient Greece) a hymn of praise (especially one sung in
         ancient Greece to invoke or thank a deity) [syn: paean,
         pean]
    2: a formal expression of praise [syn: encomium, eulogy,
       panegyric, paean, pean]