Right element may also have been「big, two-handed」(馱) but「rotund」works as well. PACK HORSES are generally larger and more rotund than other breeds of horse enabling them to carry heavy loads, but it is untrue to say these horses are of poor quality or low-grade, since they also serve in a necessary capacity that other breeds cannot. For example, a race horse is not demoted into becoming a pack horse because it loses races…a race horse is incapable of being a pack horse. Pack horses were born to be pack horses just as the race horse was for running fast. Japanese meanings of POOR QUALITY, LOW-GRADE, INSIGNIFICANT and so on must relate to the additional meanings of these elements,「regular masturbation of jerks, or horses」noting that the emphasis marker is placed between the two hands in the right element, and that long ago everyone was well aware of the fact that horses masturbate 10-15 times per day.
　Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
　 　[　https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31　]　
　The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
　「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
　　[　https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16　]　
　Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

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: Japanese variant of 馱|驮
Japanese: poor, low-grade, trivial, insignificant, worthless, load, pack, horse load, packhorse, tantrum, fretting, pun
Unihan extended: a horse load; a pack-horse
EDRDG: burdensome; pack horse; horse load; send by horse