A loose-fitting, white ecclesiastical gown with wide sleeves, worn over a cassock.
Origin: Middle English surplis, from Anglo-Norman surpliz, variant of Old French sourpeliz, from Medieval Latin superpellīcium : Latin super-, super- + Medieval Latin pellīcium, fur coat (from Latin, neuter of pellīcius, made of skin, from pellis, skin; see pel-3 in Indo-European roots).