かいふう 開封 Wanikani level 43 Play audio LinksSentence search for 開封Sentence search for かいふうKanji details for 開 and 封Edit in JMdict Noun, Suru verb, Transitive verb1. opening (a letter, parcel, etc.); breaking the sealNoun, Suru verb, Transitive verb2. unboxing (a product)Noun3. unsealed mail Discussions Log in to talk about this word.