Word: 头号 (tóuhào) Traditional: 頭號 头号 dictionary entry tóuhào first rate; top rank; number one Full dictionary entry for 头号 Example sentences using 头号 2 sentences, showing page 1 of 1. 他可是这一行的头号高手。 Tā kěshì zhè yìxíng de tóuhào gāoshǒu. He is the top expert in this line of work. 睡眠不足是年轻人的头号问题。 Shuìmiánbùzú shì niánqīngrén de tóuhào wèntí. Lack of sleep is the number one problem for young people.