古布 is read as こふ (kofu) and means recycled cloth.
こふ
kofu
みやこじょうふ
high quality hemp cloth from Miyakojima (Okinawa prefecture)
こじ
old temple
こじょう
old castle
こき
70th birthday
こぶつえいぎょうほう
Secondhand Articles Business Act
こせいしょくぶつがく
paleobotany
こじらいれき
origin and history
こしょくぶつがく
こだいし
ancient history
こぶどう
ancient Japanese martial arts
こさんへい
long-serving soldier
こきろく
historical document written without a particular addressee (e.g. a diary)