Warcraft, as an ordinary English word (not the video game), means the skill and practice of fighting wars - military strategy and the art of war. It's an old-fashioned, literary word; you'd meet it in a history book or an old poem more than in daily conversation. Today, most people who hear this word instead think of 'Warcraft', the famous video game series, which borrowed the old word for its title.

兵法、戰爭技藝（較文言的說法）；也是知名電玩遊戲名稱