quarter (hour) / moment / to carve / to engrave / to cut / oppressive / classifier for short time intervals
刻
=
亥
+
刂
:
Mnemonic symbol: an engraver.
The boar cannot believe it when it meets Karl Marx in the elevator's bathroom! Bewildered it asks for an autograph but has nothing except for a kitchen knife and an engraver. It takes Karl Marx a quarter of an hour to engrave his message in the kitchen knife: "Dear boar, keep on fighting capitalism! Yours, Karl."