白はく亜あ紀きTop 25000MeaningsNoun1. Cretaceous periodKanji used白white亜Asia紀eraPitch accentはくあきComposed of白はく亜あchalk (rock); white wallNoun紀きperiod; Nihon Shoki (second oldest work of Japanese history, compiled in 720 CE); Nihongi; Chronicles of JapanNoun