「Dog baculum in soil」or「screwing lance」with「hollow shaft」: LEEKS, a food with sheaths but no true single stem or shaft, with top leaves that resemble a comic's blown up cigar from the past century, called 'flags' in English for the resemblance. Leeks are a series of HOLLOW SHAFTS, EMPTY SHEATHS. Elements refer to a「prick splitting into pieces」as a「sheath but no shaft or stem inside.」Indicates that whatever was present prior to the onset of infection is no longer intact, a「wounded, hollowed wild dog penis.」
LEEKS and perhaps WILD ONIONS are normally grown with the shafts deeply piled in soil:「The challenge when cooking with leeks is that they are almost always dirty. When leeks are grown, soil is piled up around them, so that more of the leek is hidden from the sun, and therefore lighter in color and more tender. What produces a beautiful leek, a long pale body, also results in sand and dirt been lodged deep inside the leek.」
[ https://www.simplyrecipes.com/recipes/how_to_clean_leeks/ 2014-09-30 ]
LEEKS and WILD ONIONS have a small hard bulb at the root, making the whole shaft similar in appearance to the aroused penis of a canid with bulbus glandis engorged. LEEKS are green and white, and highly fibrous, perhaps the most fibrous of any edible plant, appearing as if the sheath flags are wrapped in figure-eights by long cloths of fiber, resembling a sick and gangrenous penis bound inside an herbal poultice. Leek roots also resemble a mass of thin, wadded threads:「…leeks do have lots of tenacious little roots so harvest requires a digging fork to loosen these hardy winter alliums. And it's a muddy task, not quite so dirty as parsnip digging but still dirty. …[W]inter leeks aren't things of beauty either, no longer the vigorous, tall spears of late summer but instead a bit bent with outer leaves flopped over, even slimy. Still, beneath this exterior they are perfectly fine, ready to harvest, trim and take to the kitchen. Their delicate, sweet fragrance wafts up as soon as they leave the ground and intensifies as trimming creates creamy white shafts topped with fans of green.」
[ https://lopezislandkitchengardens.com/tag/leek-rust/ 2023-05-18 ]

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Japanese EDRDG: wild onions or leeks
Unihan extended: wild onions or leeks