1911 Encyclopædia Britannica, Volume 22… (1911)
“ Derivatives are “port-fire” (Fr. parte-feu) , a fuse for firing rockets, &c., and formerly for the discharge of artillery, and “porter,” i.e. one who carries a burden, particularly a servant of a railway company, hotel, &c., who carries passengers' luggage to and from a station, &c. The term “porter” has been applied, since the 18th century, to a particular form of beer, dark brown or almost black in colour (see Beer and Brewing) . The finer kinds of this beer are generally now known as “stout.” ”
