boatload UK /ˈbəʊtˌləʊd/US /ˈboʊtˌloʊd/ noun2 •Cargo or passengers that fill a boat.a boatload of ferry passengers •(slang) A large quantity.He showed up an hour later with a whole boatload of hamburgers, chips, cookies, and assorted other munchies, not to mention sodas and beer, and we all fell in and stuffed ourselves silly. formsboatloads