\Trav"ers*ing\, a.
Adjustable laterally; having a lateral motion, or a swinging
motion; adapted for giving lateral motion.

{Traversing plate} (Mil.), one of two thick iron plates at
   the hinder part of a gun carriage, where the handspike is
   applied in traversing the piece. --Wilhelm.

{Traversing platform} (Mil.), a platform for traversing guns.