What does "mixed" mean?

Mixed: 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.