frock coat

English

Wikipedia has an article on:

Frock coat

Wikipedia

Noun

frock coat (plural frock coats)

1. A long double-breasted coat with long skirts, worn by men, now only on formal occasions.
   • 1907, Robert Chambers, chapter 1/2, The Younger Set^[1]:

     It was flood-tide along Fifth Avenue ; […] ; pretty women glanced out from limousine and tonneau ; young men […], silk-hatted, frock-coated, the crooks of their walking sticks tucked up under their left arms, passed on the Park side.