Definition of "precum"

The shaft was fat, long and already half-hard. Ulrich didn't mean to pry, but he understood (as precum slicked his palm) that this was a man who liked to play for hours before he came.

1996, Carol Queen, Lawrence Schimel, Switch Hitters: Lesbians Write Gay Male Erotica and Gay Men Write Lesbian Erotica, Cleis Press, Page 186

Bert made precum like some kind of instant coffee; it was always available.

2000, Perry Brass, Angel Lust: An Erotic Novel of Time Travel, Belhue Press, page 57

"[M]y penis was inserted into her vagina without a condom for a short period of time and I never knew if any precum got into her or not, but this is now six months later and her stomach does not look big at all. […] "

2002, William Marsliglio and Sally Hutchinson, Sex, Men, and Babies: Stories of Awareness and Responsibility, NYU Press, pages 80-81

"Looking down at Patrick, at his big, lean body, his hard cock leaking precum on his belly, making him moan with stroke after stroke, then leaning over to kiss him while my condomized cock slides in and out of his yielding hole—it was all more than pornographic.

2005, Russell Kick (ed.), Everything You Know About Sex Is Wrong: The Disinformation Guide To The Extremes of Human Sexuality (and everything in between) (page 295), The Disinformation Company