carload UK /ˈkɑːləʊd/US /ˈkɑɹloʊd/ noun2 •The contents of an automobile (passengers, supplies, etc.) for one trip.I brought a carload of flowers to her.We brought a carload of kids and camping gear on our road trip out west. •(US, Canada) The quantity of goods that can be carried in a freight car.By 1887 the company had grown so large that it was buying its flour and sugar by the carload. formscarloads