|  | 
Definition of Diaz
1. Noun. Portuguese explorer who in 1488 was the first European to get round the Cape of Good Hope (thus establishing a sea route from the Atlantic to Asia) (1450-1500). 
|  | 
1. Noun. Portuguese explorer who in 1488 was the first European to get round the Cape of Good Hope (thus establishing a sea route from the Atlantic to Asia) (1450-1500).