出典:Wiktionary
The term dates back to the 15th century, when large blue velvet-covered books were used for record-keeping by the Parliament of the United Kingdom.
出典:『Wiktionary』 (2024/09/13 20:15 UTC 版)
bluebook (plural bluebooks)
bluebook (third-person singular simple present bluebooks, present participle bluebooking, simple past and past participle bluebooked)