Copulation means sexual intercourse. It is the insertion of the male sex organ into the female sex canal, followed by a discharge of semen.
Following is a case law defining the term copulation. ‘Copulation means a joining together or coupling; sexual union or intercourse.’ [Cocktail Fortune v. Supervisor of Liquor Control, 1998 Mo. App. LEXIS 2032 (Mo. Ct. App. 1998)]