a black garment reaching down to the ankles; worn by priests or choristers
A military cloak or long coat worn by soldiers or horsemen in the 16th and 17th centuries.
A coarse, loose cloak or gown, worn by women, sailors, shepherds, countryfolk etc.
An item of clerical clothing: a long, sheath-like, close-fitting, ankle-length robe worn by clergy members of some Christian denominations.
The cassock, an item of Christian clerical clothing, is an ankle-length robe worn by clerics of the Roman Catholic Church, Eastern Orthodox Church, Anglican Church, Lutheran Church, some of the Oriental Orthodox churches and ministers and ordained officers of the Presbyterian and Reformed churches. "Ankle-length garment" is the literal meaning of the corresponding Latin term, vestis talaris. In the Western Christian tradition the cassock is generally close fitting, but in the Eastern Orthodox Church and the Oriental Orthodox churches the outer cassock is quite loose. The cassock derives historically from the tunic that in ancient Rome was worn underneath the toga and the chiton that was worn beneath the himation in ancient Greece. The word "cassock" comes from Middle French "casaque", meaning a long coat. In turn, the old French word may come ultimately from Turkish "quzzak", an allusion to their typical riding coat, or from Persian کژاغند "kazhāgand" – کژ "kazh" + آغند "āgand". In Ireland and in several other English-speaking countries, it is also known by the French-derived word soutane.