Turtles, and turtle heads, are Chinese euphemisms for the penis and glans in the prepuce sheath: soft-shelled turtles are covered with a leathery skin rather than hard skutes. Snapping turtles can change most any living thing into tatters in no time at all, given the opportunity. Turtles moult a small piece at a time and not their entire skin, so at any one point the animal may appear to be in tatters. Most species live submerged in mud most of the time, with glyph elements of「humbled turtle.」Some have detached (floating) bones on the underside. Species are greatly prized as meat delicacies in Asia and hunted or farmed for their meat, not unlike a「female virgin human being hunted to be raped」for her meat (top element) and then put to use for her leathery skin containing detached bone chunks in her feet. Known as suppon in Japanese, ancient Chinese lore has it that eating this animal will give a male a lasting erection and good health overall, and the animal is consumed today as in the past as treatment for erectile dysfunction…not unlike how a virgin was put to use in ancient China. Soft-shelled turtles are relatively very fast-moving, again not unlike both a virgin female human being with as yet unno-longer-integrated feet, and the assholes who would be chasing her down running with hard-ons extended.
　Yet the erectile dysfunction remedy myth regarding the effects of consuming soft-shelled turtles may be due in part to this very glyph depicting a water-living animal (「fish」element) as a fleet-footed turtle that can truly hustle over short distances (one who flees as might a virgin escaping from possible rape, and not any meat that give males a constant hard erection):「It is a common misunderstanding that turtle can nourish yin and tonify yang. It is true that it has a certain effect with regard to yin, but its function with regard to yang is to suppress it when hyperactive, something quite different from tonifying the yang. Suppression refers to a 'stabilising and adjusting of balance,' which is quite at odds with tonifying. Suppression of hyperactive yang has a long history of being misinterpreted and misunderstood. In no medical records, ancient or modern, is there an indication that turtle meat can tonify yang. Any notion that eating turtles has a tonifying effect on yang is a complete fallacy.」
　　[　https://www.thelantern.com.au/wp-content/uploads/woocommerce_uploads/2015/05/Myth-of-the-turtle.pdf　2023-05-18　]　

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)
Unihan extended: turtle
EDRDG: turtle