Often used with the adverb ekki(“not”) meaning "to comb no gray hairs" literally meaning to die so early so one gets not a chance to comb one's hair in old age; to "die early" or to "die in the prime of life".
Etymology
From kemba(“to comb”) + hærurnar(“the gray hairs”) the definiteaccusativeplural of hæra(“gray hair”). Meaning "to comb gray hairs".