n. The act of sexual procreation between a man and a woman, requiring insertion of the penis into the vagina and culminating in ejaculation of semen.
The Century Dictionary and Cyclopedia
n. Coition; sexual intercourse; copulation.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. 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
"Hence the spilling of semen for any nonprocreative purpose -- in coitus interruptus (Gen. 38: 1-11), male homosexual acts, or male masturbation -- was considered tantamount to abortion or murder."