Lewis & Short

circum-vestĭo, īre, v. a.

  1. I. To clothe or cover over (very rare): arborem, Plin. 17, 23, 35, § 208.
    In a figure: aliquem amictu prudentiae, Ambros. Virg. 12, 48.
  2. * II. Poet., of one who uses language to conceal his thoughts: se circumvestire dictis, to wrap himself up in words, Poët. ap. Cic. de Or. 3, 39, 158 (Trag. Rel. inc. v. 113 Rib.).