noun.
The act of coupling or joining; union; conjunction.
noun.
The coming together of male and female in the act of generation; sexual intercourse; coition.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
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
Word Usage
"In other words, the more vasopressin in the brain, the more male voles want to stick around and mingle with the female after copulation is through."