「Orifice」with「erotic no-longer-integrated foot」as being SUFFICIENT, ALL THAT IS NEEDED, nothing else required:「Bound feet were once considered intensely erotic in Chinese culture. …The process was started before the arch of the foot had a chance to develop fully, usually between the ages of 2 and 5. …Qing Dynasty sex manuals listed 48 different ways of playing with women's [no-longer-integrated] bound feet」(after removing the binding cloths, of course)
　　[　https://en.wikipedia.org/wiki/Foot_binding 2012-12-17　]　
　Also meaning the way that she walks, a special GAIT. The manner or GAIT, PACE one uses to walk…busted bones of the FOOT sole causing concubines with bound feet to often 'trip' along in tiny steps, the paradigm of a desired GAIT in ancient China that is emulated today using high heeled shoes. When used as the left element, includes「orifice」with「prepubescent girl, chopped by mattock.」The meaning of SUFFICIENT may derive from having lower legs that just barely enabled someone to walk slowly but never to run, with feet bones no-longer-integrated and bound in cloth. Some official sources tell us this is a human leg from the kneecap below, often neglecting to mention the no-longer-integrated bones, but…when was a kneecap an 'orifice'? behind the knee perhaps, but not the bony kneecap. More likely, that explanation should be「from the orifices down to the feet」as the LEGS, or the「orifice of a no-longer-integrated foot.」
　「Foot with mouth」as HINDRANCE, TRAP, ENCUMBRANCE, BURDEN may have been the source of the English expression「to put one's foot in one's mouth」yet all these same meanings also apply to the no-longer-integrated feet with surrogate orifices of a Chinese service provider and/or her clients, in one way or another:「putting it in a foot orifice」was a HINDRANCE, TRAP, ENCUMBRANCE, BURDEN.
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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: foot; to be sufficient; ample; excessive
Japanese: foot, leg, gait, pace, bottom structural component of a kanji, means of transportation, money, coin, counter for pairs, top up, to add, to take care of, to be sufficient, to be enough, to be worthy of, footprints, leg trip, foothold, fetters, shackles, hobbles, encumbrance, hindrance or burden, trap, footjob, something with legs, sole of foot, one's manner of walking, trace, swimfin, flipper, to be worth doing, to answer, to do, to have legs, to be able to get around, to be traced, to be tracked, to have a lover
Unihan extended: foot; attain, satisfy, enough
EDRDG: leg; foot; be sufficient; counter for pairs of footwear

Used within names (nanori)
あ　･　あす　･　おす　･　たらし