to rub / to grind / to polish / to sharpen / to wear down / to die out / to waste time / to pester / to insist
磨
=
石
+
麻
:
Mahatma Gandhi (m) has been tied down in the observatory's kitchen (o2) with ropes made of hemp (麻). He uses a stone (石) to patiently rub (磨) through the ropes.
knife / blade / single-edged sword / cutlass / CL:把[ba3] / (slang) dollar (loanword) / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs
刀
=
㇆
+
丿
:
Mnemonic symbol: 刀 looks like a cleaver (while 刂 looks like a kitchen knife).
Don Quixote (d) serves his good deed of the day in front of the aorta (ao1). In order to feed the people, he uses a plow (㇆) to dig up bananas (丿), and cuts them into slices with a broad cleaver (刀).
lit. sharpening the axe won't make the wood-splitting take longer (idiom) / fig. time invested in preparations is not lost / a beard well lathered is half shaved