Agency: Racine Police Department; Address: PO Box 375 Main Street, Racine, 45771 OH; Chief: Curtis Jones (Marshal)
Benthos definition, the biogeographic region that includes the bottom of a lake, sea, or ocean, and the littoral and supralittoral zones of the shore. See more. Dictionary.com
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  costa(noun) a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing) 2  rib, costa(noun) any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)