Source : Webster's Revised Unabridged Dictionary (1913)

Obnubilate \Ob*nu"bi*late\, v. t. [L. obnubilatus, p. p. of
   obnubilare to obscure. See {Ob-}, and {Nubilate}.]
   To cloud; to obscure. [Obs.] --Burton. -- {Ob*nu"bi*la"tion},
   n. [Obs.] --Beddoes.