- the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur
- carnal knowledge
- sex act
- sexual intercourse
- sexual relation
- These principles are recognised in numerous conventions, declarations and protocols of the main international organisations and institutions such as the United Nations, the International Labour Organisation (ILO) the World Conference on Women and the World Congress against Commercial Sexual Exploitation of Children.