The BOX, a container for holding「sticky splats of many seeds」(see 米 for details of「emissions from woody」) with reference to vulgar slang usage for the vulva and vagina. A human being's「connected orifices, or, orifices for connecting with buttocks protruding and down on all fours」are located in the groin, generally.
　Human feces was used as a valuable and important crop fertilizer, collected from the community and mixed with water to form fecal slurry, then spread over terraced slope muck fields:「bamboo for connecting, pooling orifices」: a community FECAL COLLECTION SYSTEM.
　From time immemorial before the beginning, humans have collected feces and used it as fertilizer. Still today, researchers are working on finding solutions for problems facing humanity. It is not only feces that are an excellent fertilizer. Urine works, too! "Innovative system turns human waste into sustainable fertilizer: Stanford researchers have developed a prototype that harnesses urine to generate valuable fertilizer, offering solutions for sanitation and energy in resource-limited regions."
　　[　https://news.stanford.edu/stories/2025/08/prototype-urine-human-waste-fertilizer-sustainable-energy-research/ 2025-08-21　]　
　In dynastic China, as a preventive countermeasure to mitigate uncontrolled spurting, some have suggested that polished hollow bamboo shafts were gently and carefully inserted into the rectum in order to remove the fecal matter nearest the anus prior to copulation in that orifice as a different sort of FECAL COLLECTION SYSTEM. In practice, unless some urge to defecate is felt, there likely is only a small amount of fecal matter situated near the anus, most of the time.
　As a basket for holding sticky wads and seeds, suggested by external sources as a RICE CONTAINER: bamboo strips were cut when green and pliable and woven into baskets. One of these uses was as a protective supporter, exactly as a codpiece was used in Europe and an athletic supporter with cup is used by male contact sport athletes today. The basket not only provided some protection against painful and unwanted contact of sensitive infected areas, but enabled a poultice filled with mashed grains and herbal treatments to maintain constant contact with the infected areas, provide deodorant functions, 'breathe' somewhat to dry the contents, and hold absorbent batting.

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: round bamboo basket
Japanese: box, case, package, receptacle for human waste, feces
Unihan extended: round-shaped bamboo basket for holding rice
EDRDG: round basket

Used within names (nanori)
はこ