書籍暗号 – vocab dash

書しょ籍せき暗あん号ごう

Meanings

Noun

1. book cipher; Ottendorf cipher

Kanji used

書write 籍registry 暗dark 号ID number

Composed of

書しょ籍せき

book; publication

Noun

暗あん号ごう

code; password; cipher

Noun