Top element is「prick, thorn」and a component of 'raw, live, birth' as some scholars claim (生). This upper element is the same as in the glyph meaning「liability, responsibility.」
　Formerly, lower element of「vortex, vulva between spread legs, vagina」that in modern versions of this glyph has changed to「body, flesh, meat」and not likely as a mere coincidence. Either「prick meat」or「prick longing, yearning, a yen for something」also describes the condition known in English slang as 'blue balls'…or alternatively in some circles: epididymal hypertension, congested vas deferens, and so on.
　Depicting a body that is UNRIPE, IMMATURE, INEXPERIENCED (literally or figuratively), YOUNG, FRESH, CLEAN, and as yet still uninfected, that is, the「vulva between spread legs has yet to be pricked…or has been freshly pricked for the first time and now is in a painful condition.」Meaning BLUE perhaps because newborn babies are often BLUE, or more likely, because Asian babies are often, if not always, covered on their backs from shoulders to buttocks in patches with large BLUE spots on the skin, known as「Mongolian blue spots, or, congenital dermal melanocytosis」a sign of a body that is UNRIPE, IMMATURE, INEXPERIENCED, YOUNG (and while not promoting pedophilia, it cannot be denied that early humans engaged in that behavior, as do bonobos today…a YOUNG child was still FRESH and CLEAN, and BLUE )
　The「Mongolian blue spot…normally disappears three to five years after birth and almost always by puberty…as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back), the buttocks, flanks, and shoulders…and are most prevalent among infants of East Asian groups [over 95% of such humans]」
　　[　https://en.wikipedia.org/wiki/Mongolian_spot 2011-05-09　]　
　Anciently, the Japanese had no separate word for green, which was considered a shade of BLUE. See 'green' (緑) to learn why the existence of that color was denied for centuries.
　Some scholars describe this glyph as young plant life that grows luxuriantly around the periphery of a well (due to that lower element of「vortex hole, vulva between spread legs」), with top element as some sort of variant of rich「bushy plant life」and the bottom element imagined as some sort of variant of water well, a wet cavity that often spilled a bit and watered the nearby plants making them extra bushy and luxuriant, which scholars say morphed (this one time, in this glyph only?) into「flesh, meat.」
　「Bushy circle」as fresh vegetation that is IMMATURE, INEXPERIENCED, YOUNG, FRESH, CLEAN, PURE and UNDEFILED (note that these descriptions do not normally apply to salad fixings, but instead, to young bodies). These two elements are also used in other glyphs to represent sex organs of the male (top, as「tallywacker, bushy prick」) and the female (bottom, as「vulva between spread legs」), respectively, and may denote CLEAN sex due to inexperience (still「green」) and no corkscrew-bearing pox pustules, drip-drip-dripping telltale gleet, genital warts, herpetic lesions, smegma, syphilitic chancres, or other disease causing agents, yet.
　Note that the following colors are all associated with the human body and its various emissions or conditions: black (黒, 黑). Purple (紫). Blue (靑,青). Green (緑,綠). Yellow (黄,黃). Orange (橙). Red (赤). And white (白).

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: variant of 青
Unihan extended: blue