a black skimmer; a sea bird of the species Rhynchops niger, that flies low over the sea, "cutting" the water surface with its lower mandible to catch small fish
a black skimmer; a sea bird of Rhynchops niger species, that flies low over the sea, "cutting" the water surface with its lower mandible to catch small fish
A starling or other structure attached to the pier of a bridge, with an angle or edge directed up stream, in order better to resist the action of water, ice, etc