Definition of cassock noun from the Oxford Advanced Learner's Dictionary

 

cassock

 noun
noun
BrE BrE//ˈkæsək//
 
; NAmE NAmE//ˈkæsək//
 
Religious items
 
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a long piece of clothing, usually black or red, worn by some Christian priests and other people with special duties in a church See related entries: Religious items Word Origin mid 16th cent.: from French casaque ‘long coat’, from Italian casacca ‘riding coat’, probably from Turkic (a large group of Western and Central Asian languages) kazak ‘vagabond’.
See the Oxford Advanced American Dictionary entry: cassock