1. : any of numerous active voracious sharks (genus Carcharhinus) found in shallow water along all warm coasts: as
a. : cub shark
b. : brown shark 2
2. : greenland shark
* * *
any of various requiem sharks, esp. of the genus Carcharhinus.
[1810-20]
* * *
ground shark,
any one of various sharks inhabiting warm coastal waters.
Useful english dictionary. 2012.