What does Admiral of the Ocean Sea mean?

Admiral of the Ocean Sea meaning in Urban Dictionary

Noun (naval language): the universally supreme naval ranking, awarded typically and then one seaman (Christopher Columbus) jointly by HRM Ferdinand and HRM Isabella of Spain, in recognition of their accomplishment in effectively navigating the Atlantic Ocean westward and (presumed during the time) the advancement of a shorter, less hazardous, much less high priced trading route to India from European countries.