also: しょるいカバン
noun
briefcase; attaché case
A bag specifically for carrying documents and business papers; often used in office or formal settings.
彼は書類かばんを抱えて会議室に入った。
He entered the meeting room carrying a briefcase.
新しい書類かばんを買いたい。
I want to buy a new briefcase.
Compound of 書類 (documents) and かばん (bag). The word かばん is of uncertain origin, possibly from Chinese 夾板 or a native Japanese term.