incession

from The Collaborative International Dictionary of English v.0.48

Incession \In*ces"sion\, n. [L. incedere, incessum, to walk.]
   Motion on foot; progress in walking. [Obs.]
   [1913 Webster]

         The incession or local motion of animals. --Sir T.
                                                  Browne.
   [1913 Webster]