Sexual activity between two males; sodomy; the "crime against nature"; -- used especially when one partner is a boy.

Sex between an adult and a child, usually an adult male and a male child.

homosexual acts between a man and a boy.

Practicing homosexuality, particularly a man with a boy.

Sexual relations between a man and a boy.

The term pederasty or paederasty embraces a wide range of erotic practices between adult males and adolescent boys. Pederastic relations have been variously described - as spiritual or materialistic, lawful or criminal, loving or commercial, compassionate or abusive, sexual or chaste – and have been documented from prehistory to modern times.