The Collaborative International Dictionary of English v.0.48:

Enrobe \En*robe"\, v. t. [Pref. en- + robe: cf. OF. enrober.]
   To invest or adorn with a robe; to attire.
   [1913 Webster]

WordNet (r) 3.0 (2006):

enrobe
    v 1: provide with a coating; "enrobe the nuts with chocolate"
    2: adorn with a robe

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "enrobe":
   apparel, array, attire, bedeck, bedrape, bundle up, clothe, deck,
   dight, drape, dress, dud, enclothe, endue, enshroud, envelop,
   enwrap, garb, garment, habilitate, invest, lap, muffle up, rag out,
   raiment, robe, sheathe, shroud, swaddle, swathe, tire, wrap,
   wrap up