Dictionary/封書ふうしょFuusho封書 (Fuusho) is a Japanese noun meaning “sealed letter”.Meaningsnounsealed letterKanji in 封書封seal書writeRelated words書くto write文letter秘書(private) secretary書類document報告書(written) report遺書note left by a dead person書き込むto fill in (field, entry, etc.)契約書(written) contract封じるto seal (e.g. a letter)封筒envelope絵を描くto paint a picture図書館library