[Elements vary by font]「roof」(of your own home, generally) that「surrounds from above」and is「deliberately out of reach」so that you don't constantly bang your head, with「split, emit, divided」is a HOLE, PIT with a roof. Also depicts that the ground has been「split and emitted」leading down into a PIT HOLE dug as a home and used by humans (a yaodong in Chinese). When used within other glyphs, elements often are「roof, at home」with「squatting legs, copulation」or「trapped, snared」perhaps since there was little else to do for human beings over hundreds of thousands of years while at home, or, folks under lockdown during a pandemic quarantine.
　「Deliberately」with「divided, eight」as a CAVITY, INSERTION POINT, and (coincidentally?) the glyph meaning 'sticky blob, jism splat' also has eight portions: 米 (a 'wood emission').
　After caves became too crowded, archeologists tell us that early Chinese and Japanese (during the Jōmon era) lived in PITS, a HOLE that was dug into soil or a hillside (⻖) with soil walls that was in later times covered with a roof, as depicted by this glyph. Scorpions also excavate their homes and live in spiralling burrows underground, similar to earlier humans. The partially underground pits for humans provided some protection from storms, some non-human animals, and a moderated temperature (cooler in summer, warmer in winter):
　「They practiced a rudimentary form of agriculture and lived in caves and later in groups of either shallow pit dwellings or above-ground houses, leaving rich middens for modern archaeological study…. The Early Jōmon is the first stage in the Jōmon era of Japanese pre-history. The Jōmon period itself ranged from 10,000 to 300 BC, with the first stage lasting from 4000 to 3000 BC. The Early Jōmon is characterized by the high sea level (2 to 3 meters higher than the modern day) and a significant population increase. This period saw a rise in complexity in the design of pit houses [such as the addition of a thatched roof and lined walls], the most commonly used method of housing at the time.」
　　[　https://en.wikipedia.org/wiki/J%C5%8Dmon_period 2012-07-02　]　
　Significantly, this glyph may also be drawn as six (六) with an emphasis marker at each end of the「rod」element, suggestive of 'all in, babe' and similar hoots.

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: cave; cavity; hole; acupuncture point
Japanese: hole, deficit, shortage, missing person, vacancy, opening, flaw, profitable place not well known by others, upset victory, pit, hiding place, underbelly, ass, arse, buttocks, rear, end, acupuncture point, drilling, filling in gaps, filling in blanks, covering up a deficit, making up for something, cellar, cave, hole in the ground, excavation, digging, to have a hole, to be pierced, anus
Unihan extended: cave, den, hole
EDRDG: hole; aperture; slit; cave; den

Used within names (nanori)
けな　･　しし　･　な