Word封ふう筒とうfuutouMeaningenvelopePart of speechnounPronunciationCourseJapaneseLessonVocabulary expansion 43Breakdown of fuutouseal封You seal an envelope containing a square jewel of significant measurement.cylinder筒Bamboo has the same shape as a cylinder.Usages of fuutou封ふう筒とう に 手て紙がみ を 入いれました。fuutou ni tegami o iremashita.I put the letter in the envelope.