The Collaborative International Dictionary of English v.0.48:

Circumambulate \Cir`cum*am"bu*late\, v. t. [L. circumambulatus,
   p. p. of circumambulare to walk around; circum + ambulare.
   See Ambulate.]
   To walk round about. -- Cir`cum*am`bu*la"tion, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

circumambulate
    v 1: walk around something [syn: circumambulate, walk
         around]