刻骨

刻骨	kè gǔ	ingrained / entrenched / deep-rooted
刻	kè	quarter (hour) / moment / to carve / to engrave / to cut / oppressive / classifier for short time intervals
骨	gū	used in 骨碌碌 / used in 骨碌 / used in 骨朵
骨	gǔ	bone