「Writing, scraping, inscribing」with「array, a queue, in line」: some say elements indicate the time of day that a person can see well enough to 'write lines' continuously without the aid of a nearby wick burning some sort of liquefied animal fat, the DAYLIGHT HOURS…recall that electrical lighting systems have been readily available only for about 100 years, and then starting only in larger cities, so it became inconvenient to attempt writing at night, let alone to use a keyboard…believe it or not, smartphones had not yet been invented, either. Nonetheless, there actually were oil wick lamps in use at night that enabled writing, so this glyph may also likely refer to the time during DAYLIGHT HOURS that necessary medical procedures were performed (the literal meaning of these elements), and that there was no need for emergency procedures at night when seeing was impaired by darkness…a patient with this sort of problem could always wait until it was naturally bright enough for a medical service provider to see clearly, and avoid costly mistakes, so patients normally were not lining up at night awaiting treatment.
　Middle element likely is「say, tonguing mouth」and not「sun」formerly, nevertheless the Japanese who brought these glyphs from China may have interpreted it also as「erect, perpendicular sun over horizon」and ascribed the added meaning of NOON not used in China long ago.
　「Again and again with the dawn」may signify the DAYLIGHT HOURS.
　Alternatively but possibly unlikely: elements might be read as「erect shaft reaming hand again and again and again」with someone also performing「in the female role.」…recall that DURING THE DAYLIGHT HOURS the females stayed home near the caverns tending fields, gathering vegetables, and caring for the children while the males went off to hunt. After successfully snaring a sufficient number of small rodents to feed most everyone, the males had some free time on their hands, not wanting to return from「hunting」too early, since then they might be asked to help with tending fields, gathering vegetables, and caring for children. DURING DAYLIGHT HOURS, the way males killed that extra time was「scraping skin again and again」as well as「performing in the female role, and then the other guy performing in the female role, again」doing your buddy and then he did you, following the Golden Rule. Many males today still avoid getting home too early for these same reasons, so they probably did so in the good old days, too.

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: daytime
Japanese: noon, midday, daytime, lunch
Unihan extended: daytime, daylight
EDRDG: daytime; daylight