「Repeatedly」「erection」and「arrayed on rod, down」as a man or woman behaving much like a cat using its claws PAWING and scratching at oneself or upon someone else nearby. Describes the manner that an animal such as a cat PAWS AND SCRATCHES. Also a HAND HELD IN THE SHAPE OF A HATCHET IN MOTION to perform self-pawing: could be a female hand pawing her pussy…perhaps the source of that English nomenclature. Or just as likely, an「extended hand」[element] used to「put rod down」to push and keep the rod of someone else away from the person using the hand, SUBTLE CRUELTY, TEASING PRICK, SCRATCHING AT WITH CLAWS.
　「Repeatedly」「erect, quick motions」and「arrays down」while using a small one-handed axe, a HATCHET to chop firewood. A HATCHET was not normally used as a weapon, but in a pinch still served well enough to HACK an intruder. A unit of weight of about 500-600 grams, or 1.1-1.3 pounds, perhaps the weight of cat carcass being prepared as nuggets with a Chinese cleaver. Then again, perhaps the origin of the English expression, POUND OF FLESH to describe emasculation (see 觔 as kati, a replacement glyph) by hacking off male genitals with a hatchet and the resulting weight of the detached meat.
　「Repeatedly bobbing on head of erection」with「rod down」describes what is known in the vernacular as a PRICK TEASE, repeatedly inciting a full erection by pussy pawing but then not continuing until climax, considered by some to be CRUEL, RUTHLESS, MALICIOUS bordering on torture and a known cause of vasocongested epididymal hypertension. Fortunately, relief can be handedly applied automagically by self-stimulation soon thereafter.
　As with the English expression「hatchet job」a CRUEL, RUTHLESS, MALICIOUS, SPITEFUL ATTACK upon another, physically or figuratively on a reputation, much like a cat using its claws or hatchet might badly scratch, but seldom kill, a CAT FIGHT. FURTIVE, SKULKING and SNEAKING, moving STEALTHILY and POUNCING FROM BEHIND, as a cat might. Needless to point out perhaps that these elements also are「anus」(后) merge with「rod」rather than「orifice」that may also cause exactly the same POUNCING FROM BEHIND and so on. Cats are notorious for copulation in exactly such a manner.
　Note that 尸 as「genitals」with the end chopped and hanging vertically (not raised) forms this glyph also.

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: catty; weight equal to 0.5 kg
Japanese: unit of weight ~600g, pound, loaf
Unihan extended: a catty (approximately 500 g) an axe; keen, shrewd
EDRDG: axe; 1.32 lb; catty; counter for loaves of bread; axe radical (no. 69)