noun
1. : a small brown cat shark ( Apristurus brunneus ) of the Pacific coast of No. America
2. : a common grayish or brownish shark ( Carcharhinus milberti ) widely distributed in the Atlantic ocean
3. : a large gray, brown, or yellowish shark ( Carcharias taurus ) of tropical seas that is chiefly a bottom scavenger alongshore though regarded in southern Africa as the leading man-eater of the area