1. (noun) white shark, white pointer shark, great white shark, Carcharodon carcharias - the largest of man-eating sharks, with the largest individuals known to reach 6 metres in length and 2,268 kilograms in weight. Large spindle-shaped body with pointed snout. Near-symetrical tail, large first dorsal and very small second dorsal fin. Grey above and white below with a sharp demarcation between the two colours.