A priest wearing a cassock.
a long, closefitting vestment, generally black, worn as an outer garment or under the surplice by members of the clergy, choristers, etc.
Origin of cassockFrench casaque; probably ; from Turkish qazaq, nomad, adventurer (from source Russian kozak, Cossack); in allusion to their usual riding coat
An ankle-length garment with a close-fitting waist and sleeves, worn by the clergy and others assisting in church services.
Origin of cassockFrench casaque, long coat, from Old French, perhaps from Italian casacca, from Persian kazhāgand, padded garment : kazh, raw silk + āgand, stuffed.
From Middle French casaque (“cloak”).