Merriam-Webster's Collegiate® Dictionary, 11th Edition
ROBE
I. noun
Etymology: Middle English, from Anglo-French, booty, clothing, robe, of Germanic origin; akin to Old High German roubōn to rob
Date: 13th century
1. a long flowing outer garment, a loose garment (as a bathrobe) for informal wear especially at home, covering , mantle , a covering of pelts or fabric for the lower body used while driving or at outdoor events,
II. verb (robed; robing)
Date: 14th century
transitive verb to clothe or cover with or as if with a robe, intransitive verb to put on a robe, dress