苦头

苦头	kǔ tou	sufferings
苦	kǔ	bitter / hardship / pain / to suffer / to bring suffering to / painstakingly
头	tóu	head / hair style / the top / end / beginning or end / a stub / remnant / chief / boss / side / aspect / first / leading / classifier for pigs or livestock / CL:个
头	tou	suffix for nouns