The meaning of SCROBE is a small groove (as at the base of the antenna of a weevil or on the outer surface of a mandible).
The meaning "dressing gown" is from 1854; such extended senses often appear first in French, e.g.robe de chambre"dressing gown,"robe de nuit"nightgown." From c. 1300 in reference to official vestments and thus indicative of position or membership in a religious order, guild, etc.; metonym...
(a loose, sleeveless gown); sometimes in the Middle Ages the name chimere was given to it as well as to the sleeveless upper robe. In winter the cassock was often lined with furs varying in costliness with the rank of the wearer, and its colour also varied in the Middle Ages with ...