Frock coat
From Tardis Wiki, the free Doctor Who reference
A frock coat was an article of clothing.
The First Doctor wore an Edwardian frock coat. (COMIC: Moon Landing, PROSE: Sanctuary)
During his retirement to the Victorian era, the Eleventh Doctor wore a battered felt top hat, a burgundy frock coat, a waistcoat with collars and a pocket watch with a fob chain. (TV: The Great Detective, The Snowmen)