Webster’s Revised Unabridged Dictionary · 1913
Copulation
Cop′u·la′tion (kŏp′ū·lā′shŭn), n. [L. copulatio: cf. F. copulation.] 1. The act of coupling or joining; union; conjunction.
Wit, you know, is the unexpected copulation of ideas. Johnson.
2. The coming together of male and female in the act of generation; sexual union; coition.