We should be careful not to confuse classical pederasty with the modern term. Both meanings are correct depending on context. If you refer to the pederasty (paiderastia) of ancient Greece, you're not referring to sodomy between an adult male and a pre-pubescent boy. The eromenos was a youth, not a child, and anal intercourse between a pedagogue and the eromenos was strictly forbidden: 'intercourse' was intercrural, not penetratory. So helio's use of the word was correct, though that meaning is not widely used today.