Dictionary/古紙こしKoshiOther forms: 故紙古紙 (Koshi) is a Japanese noun meaning “used paper, paper for recycling”.Meaningsnounused paper; paper for recyclingKanji in 古紙古old紙paperRelated words何故why事故accident手紙letter古いold紙paper何故かsomehow故郷hometown故郷hometown稽古practice何故ならbecause故にtherefore名古屋Nagoya (city)