noun
tokkōfuku; biker gang jacket
Abbreviation of 特攻服 (tokkōfuku), a long jacket worn by bōsōzoku biker gang members, often with embroidered slogans. Usually written in kana.
暴走族のメンバーはとっぷくを着て集会に集まった。
The biker gang members gathered at the meeting wearing tokkōfuku jackets.