The Collaborative International Dictionary of English v.0.48:

Pope \Pope\ (p[=o]p), n. [AS. p[=a]pa, L. papa father, bishop.
   Cf. Papa, Papal.]
   1. Any ecclesiastic, esp. a bishop. [Obs.] --Foxe.
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   2. The bishop of Rome, the head of the Roman Catholic Church.
      See Note under Cardinal.
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   3. A parish priest, or a chaplain, of the Greek Church.
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   4. (Zool.) A fish; the ruff.
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   Pope Joan, a game at cards played on a round board with
      compartments.

   Pope's eye, the gland surrounded with fat in the middle of
      the thigh of an ox or sheep. --R. D. Blackmore.

   Pope's nose, the rump, or uropygium, of a bird. See
      Uropygium.

   to be more Catholic than the Pope to adhere more
      stringently to Roman Catholic practices and doctrine than
      is required by church doctrine; -- usually used in a
      negative sense to mean, to be excessively pious.
      [1913 Webster +PJC]