Ejaculated material,「sperm from penis」referring to the exit site for seminal fluids, the MEATUS, that little hole at the tip of a penis from which a child in gamete form first wriggles and spurts with motions resembling those of a mosquito maggot. Represents a HOLE THAT SELF-CLOSES AFTER BEING OPENED, a SMALL HOLE PORE:
　「During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. The seminal vesicles produce a yellowish viscous fluid rich in fructose and other substances that makes up about 70% of human semen. The prostatic secretion, influenced by dihydrotestosterone, is a whitish (sometimes clear), thin fluid containing proteolytic enzymes, citric acid, acid phosphatase and lipids. The bulbourethral glands secrete a clear secretion into the lumen of the urethra to lubricate it.」
　　[　https://en.wikipedia.org/wiki/Semen 2013-01-21　]　
　Liquids combining thick cream (literally) and clear or whitish whey as the skim portion that spurt together from a tiny self-closing hole in red, hard erectile tissue, is a NIPPLE PORE, and serves as a properly descriptive analogy of MILK as SEMEN, both being nourishing fluids that gave life to a「child repeatedly」in dynastic China. …and let's face it, the female breasts and erect nipples are in many ways what give life to a male penis, just as an erect penis is what might attract some females: UNDERBELLY.
　A SKIN PORE that may contain a white discharge is a PIMPLE, CYST, BOIL.
　Also refers to the small hole remaining in putrid flesh after a「maggot」has eaten its way further inside and becomes「hidden」(maggots only consume putrid flesh, not healthy flesh generally). The hole seems to close over and become concealed, as does the puncture wound from a「scorpion barb on its tail, still pumping venom」via reflex muscles surrounding the venom sac even after being pulled out of the scorpion's tail and becoming imbedded in a victim's flesh, akin to an ejaculating human penis spewing gleet. Permitting a telson to remain in one's flesh with the venom also soon produces a growing spot of putrid flesh as the venom acts to dissolve surrounding tissue.
　A hole that is small relative to the size of the host: this glyph is also used to depict a CRATER, because after blasting into the Earth and blowing open a hole, the ground normally「closes back over」the meteor in the same manner as flesh closes over maggots. And refers to a whale's BLOWHOLE (the whale's own flesh closes and conceals the hole) that suddenly blasts out salty white foam…in human terms, both of these holes might be fairly large, but not when compared to a whale, or, the whole Earth. Meteors often contain precious elements, such as iridium, A PROFITABLE PLACE NOT WELL KNOWN, as might be「child, with an adult penis」back in the days of dynastic China, and most everywhere else prior to modern laws regarding sexual activity with children.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: hole; classifier for cave dwellings
Japanese: hole, deficit, shortage, missing person, vacancy, opening, flaw, profitable place not well known by others, upset victory, pit, hiding place, underbelly
Unihan extended: opening, hole, orifice; great
EDRDG: cavity; hole; slit; very; great; exceedingly

Used within names (nanori)
のり