Jersey UK /ˈd͡ʒɜːzi/US /ˈd͡ʒɝzi/ noun3 •An island, a crown dependency of the United Kingdom; the largest of the Channel Islands in the English Channel between France and England.They usually holiday on Jersey or the Isle of Man. •A breed of dairy cattle developed on Jersey.The Jersey is the queen of the creamery, in my neighbor's estimation. •Any individual of this breed.She's our butter queen, our dandy Jersey, Mary Ann. formsJerseys