The Collaborative International Dictionary
Mixed \Mixed\, a. Formed by mixing; united; mingled; blended. See Mix, v. t. & i.
Mixed action (Law), a suit combining the properties of a real and a personal action.
Mixed angle, a mixtilineal angle.
Mixed fabric, a textile fabric composed of two or more kinds of fiber, as a poplin.
Mixed marriage, a marriage between persons of different races or religions; specifically, one between a Roman Catholic and a Protestant.
Mixed number, a whole number and a fraction taken together.
Mixed train, a railway train containing both passenger and freight cars.
Mixed voices (Mus.), voices of both males and females united in the same performance.
Wikipedia
A mixed train is a train that hauls both passenger and freight cars or wagons. In the early days of railways they were quite common, but by the 20th century they were largely confined to branch lines with little traffic. Because mixed trains involve the shunting of goods wagons at stations along the way, they provide passengers with a very slow service, and have largely disappeared today. Their use is also at variance with the separation of passenger and goods services into different subsidiaries by most modern railway administrations.
Usage examples of "mixed train".
This was a mixed train going by, it always went by at that time every night.
There was a track and a station, and once a day a mixed train fled shrieking through it.