noun
duster coat; dust-coat
A lightweight, long coat originally worn to protect clothing from dust, especially in early automobiles or Western settings.
彼はダスターコートを着て、クラシックカーに乗り込んだ。
He put on a duster coat and got into the classic car.
A trench coat is heavier and often waterproof; a duster coat is lighter and historically for dust protection.
Borrowed from English 'duster coat', a compound of 'duster' and 'coat'.