noun
long wallet
A wallet that is longer than it is wide, designed to hold bills unfolded. Common in Japan for keeping banknotes flat.
彼は誕生日に革の長財布をもらった。
He received a leather long wallet for his birthday.
Compound of 長 (naga, 'long') and 財布 (saifu, 'wallet'), with rendaku voicing of さ to ざ.