a person with a great ass.
All the scantily-clad female callipyges at the beach were causing him to pitch a trouser tent.
by weave September 21, 2003
The correct adjective is "callipygean", i.e. "having beautiful buttocks". "Callipyge" is the noun "beautiful buttocks", simple.
Her callipyge made me flabbergasted.
by Sérgio Rberto de Souza January 10, 2004