Depicts「rod」in the MIDDLE, AMIDST, AMONG「orifice」albeit elongated in all fonts that more closely resembles two orifices side-by-side, creating something that is TWO-SIDED. As it appears frequently on early pottery vessels that archeologists have identified with fertility rites, this glyph likely originated from depicting female genitalia, in particular the VULVA (see 鵠), JUXTAPOSED ORIFICES. Elements as「screwing in cavity」support these meanings as well, or perhaps as some have suggested,「screwing in spread legs」although admittedly the MIDDLE access point between the lower limbs is not one necessarily passing that rod through a vulva cavity in every case, the exception being the egress orifice of the alimentary canal that is not a cavity, per se. Nonetheless…
　As the substituted abbreviation for a more complex glyph (𦰩) meaning CHINA, the 'mother of humanity' as it relates to sinocentrism, this element is the「birthplace, birth portal.」Note that in simplified Chinese, 'China' is now depicted as a「crotch flow」of some sort or another (汉). With some exceptions, most very early cave art depicts vulvas and bonobo-like humans filling orifices, and not diagrams of farming flat fields, hunting animals, or aliens and their spacecraft.
　　[　https://www.science.org/content/article/engravings-female-genitalia-may-be-worlds-oldest-cave-art　2023-05-17　]　
　For other details regarding sex in ancient China and depictions of this glyph as VULVA (㕜, 盅, 肿 and so on)
　　[　https://factsanddetails.com/china/cat11/sub76/item132.html　2023-05-18　]　
　Note that HITTING THE BULL'S EYE is closely related to scoring a hit on the spot where a bull's eye is focused generally, that is, on a cow's vagina as the goal, mark…his target. Perhaps the source of the English expression,「dead center」and was coined long prior to the machine age as a reference to public service providers. The TARGET on a dartboard resembles the eyeball of bull cattle only if removed from its eye socket, generally.

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: to hit (the mark); to be hit by; to suffer; to win (a prize, a lottery); within; among; in; middle; center; while (doing sth); during; (dialect) OK; all right; China; Chinese
Japanese: inside, within, while, among, amongst, between, our, my spouse, imperial palace grounds, emperor, I, me, through, throughout, in the course of, all over or throughout, medium, average, middle, moderation, middle school, China, out of, during, hit, success, guess, prediction, affability, friendliness, sensation, touch, bruise, to be hit, to strike, to touch, to be in contact, to be affixed, to be equivalent to, to be applicable, to apply to, to be right on the money, to be selected, to win, to be successful, to go well, to be a hit, to face, to confront, to lie, to undertake, to be assigned, to be stricken, to be afflicted, to be called upon, to treat, to lash out at, to be unnecessary, to be hitting well, to be on a hitting streak, to feel a bite, to be bruised, to spoil, to feel out, to probe into, to check, to shave, to be a relative of a person, to stand in a relationship, very, considerably, easily, readily, fairly, quite, highly, rather, by no means, not readily, half-way point, excellent, wonderful, very good, advertisement hanging in a train, inter alia, above all, to hit something aimed at, to hit a prize
Unihan extended: central; center, middle; in the midst of; hit (target); attain
EDRDG: in; inside; middle; mean; center

Used within names (nanori)
あたる　･　かなえ