Source : Webster's Revised Unabridged Dictionary (1913)

Cabotage \Cab"o*tage\, n. [F. cabotage, fr. caboter to sail
   along the coast; cf. Sp. cabo cape.] (Naut.)
   Navigation along the coast; the details of coast pilotage.

Source : WordNet®

cabotage
     n 1: the exclusive right of a country to control the air traffic
          within its borders
     2: navigation in coastal waters