sperm

Etymology

From Middle English sperme, from Latin sperma, from Ancient Greek σπέρμα (spérma, “seed, semen”). Compare also Old French esperme, sparme.

noun

1. (countable) The reproductive cell or gamete of the male; a spermatozoon.
   In the Fall into the division of labor, Levi-Strauss sees the great hunters trading women to create the exogamous bonds of one hunting band with another. The egg is, but the sperm does. The tiny sperm may be furious in its activity, but its highway to the egg is paved by the alkaline trail set down by the Great Mother. 1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 80
   Seeing the two little moving cells – the result of her egg and Luke's sperm – was incredible, and two very long weeks later the clinic confirmed I was pregnant. 13 Apr 2012, Sarah Whitehouse, The Guardian
2. (uncountable, slang) Semen; the generative substance of male animals.
3. (chemistry) Sperm oil; whale oil from a sperm whale; spermaceti.

verb

1. (intransitive, slang, vulgar) To ejaculate.
2. (transitive, slang, vulgar) To ejaculate on or into.