Meaning

noun the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

originVariant of come, attested (in the basic sense "come, move from further to nearer, arrive") since Old English. The sexual sense of come is attested since the 1650s. In this sense and spelling, attested from 1970s.

Etymology from Wiktionary, CC BY-SA 3.0