'Coastal' definitions:

Definition of 'coastal'

From: WordNet
adjective
Of or relating to a coast; "coastal erosion"
adjective
Located on or near or bordering on a coast; "coastal marshes"; "coastal waters"; "the Atlantic coastal plain" [ant: inland]

Definition of 'Coastal'

From: GCIDE
  • Coastal \Coast"al\, a. Of or pertaining to a coast. [1913 Webster]