Douglas Harper's Etymology Dictionary
1900, first attested in Havelock Ellis.
Wiktionary
n. sexual intercourse interrupted by withdrawal of the penis before ejaculation.
WordNet
n. a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation [syn: withdrawal method, pulling out, onanism]
Wikipedia
Coitus interruptus, also known as the rejected sexual intercourse, withdrawal or pull-out method, is a method of birth control in which a man, during sexual intercourse, withdraws his penis from a woman's vagina prior to orgasm (and ejaculation), and then directs his ejaculate ( semen) away from the vagina in an effort to avoid insemination.
This method of contraception, widely used for at least two millennia, is still in use today. This method was used by an estimated 38 million couples worldwide in 1991. Coitus interruptus does not protect against sexually transmitted infections (STIs/STDs).
Usage examples of "coitus interruptus".
And instead of testing those skills to the limit, the Hauptmann was sitting half-drunk, very tired, and in a state of aggravated coitus interruptus in a truck at the head of a column of three other trucks, one hundred men in all, on the way to sort out a bit of local difficulty in Martigny, on pain of transfer to the Russian Front.
What about Germaine Greer's sudden championship of motherhood, chastity and coitus interruptus?
One of her least favorite aspects of being a park ranger was coitus interruptus.
From kitchen to living room to shower, it was one of the great displays of coitus interruptus and then Remo made it non-interruptus as he finished shagging her on the hard, unyielding mattress of the four poster bed in her enormous bedroom, with the blue velvet-striped wallpaper on one wall.
Out of mischievousness, she had the widow discover the two and demand coitus interruptus.
She was well in the lead in the office daily Getting People Out of the Bath stakes, and only needed two more points to win the weekly Coitus Interruptus award.
He had been about to come when the cop dragged me off to jail, and he was strangling in some kind of gruesome S-M equivalent of coitus interruptus.
Comments: homo coitus interruptus, Junior levies on-the-spot fines-- cash, jewelry, reefers.