frock
noun
[ frɒk ]
• a woman's or girl's dress.
• "her new party frock"
• a long gown with flowing sleeves worn by monks, priests, or clergy.
• "the chaplain tottered in stiff splendid frocks"
• an agricultural worker's smock; a smock-frock.
• short for frock coat.
Origin:
late Middle English: from Old French froc, of Germanic origin. The sense ‘priest's or monk's gown’ is preserved in defrock .