D defs.my
Entry 2 senses Webster, 1913

Cassock

/kăs'-ək/ · Cas·sock · IPA /ˈkæsək/
01 n. A long outer garment formerly worn by men and women, as well as by soldiers as part of their uniform.
  1. 1.
    A long outer garment formerly worn by men and women, as well as by soldiers as part of their uniform.
  2. 2.
    A garment resembling a long frock coat worn by the clergy of certain churches when officiating, and by others as the usually outer garment.(Eccl.)