ふうかん 封緘 LinksSentence search for 封緘Sentence search for ふうかんSentence search for 封かんKanji details for 封 and 緘Edit in JMdict Noun, Suru verb, Transitive verb1. seal (letters, documents, etc.)Other forms封かん 【ふうかん】 Discussions Log in to talk about this word.