Traverse

v. i.
  1. To use the posture or motions of opposition or counteraction, as in fencing.
  2. To turn, as on a pivot; to move round; to swivel; as, the needle of a compass traverses; if it does not traverse well, it is an unsafe guide.
  3. To tread or move crosswise, as a horse that throws his croup to one side and his head to the other.