「Sticky wad」with「undefiled, young, unripe, inexperienced, immature」or「splat with prick, meat.」Some scholars say that the connection of this glyph with SEMEN and ESSENCE stems from「spirit of vitality」or this connection is because the Chinese had developed a light-refracting microscope some 4,000 years ago of approximately 100–150 times magnification power that could see the individual DETAILS of sperm cells in semen to a degree, and the little buggers swimming in a stream of flowing jism perhaps reminded the ancient scientists of a stream of rice grains flowing from a container…or, of maggots. The microscope was clear water filled to varying levels in tubes, and the light-refracting properties of water allowed the magnification.
　However, getting down to the DETAILS of the ESSENCE of a male's CORE SPIRIT and VITALITY is his SEMEN, perhaps best exemplified for the majority of [those ancient] males with these elements formerly as「immature puckered orifices, sticky wad splatted between spread legs with vulva being pricked.」…modern form now uses「meat」to replace the lower-right element of「vulva between spread legs.」While this interpretation decidedly lacks grace, it is far more simple and believable than「rice grains that are undefiled, young, unripe, inexperienced, immature and green.」
　REFINED refers to that initial experience maybe, an experience repeatedly referred to in glyphs as 'divine.' PURITY refers to the girl no one else has yet penetrated. VITALITY frankly refers to the man's eagerness and erectile state, but could refer to the friskiness of the girl, too. DETAILED may refer to most any aspect, including the bragging afterward among one's bonobo-like homies or caveman cronies.

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: essence; extract; vitality; energy; semen; sperm; mythical goblin spirit; highly perfected; elite; the pick of something; proficient (refined ability); extremely (fine); selected rice (archaic)
Japanese: spirit, sprite, nymph, energy, vigor, strength, fine details, semen, at the most, at best, to the utmost, as much as possible, to polish, to refine, to purify, detailed, full, accurate, knowing very well, well-acquainted, well-informed
Unihan extended: essence; semen; spirit
EDRDG: refined; ghost; fairy; energy; vitality; semen; excellence; purity; skill

Used within names (nanori)
きよ