硬骨头 Traditional 硬骨頭 yìng gǔ tou 🔊 resolute individual + Keep this word Meanings yìng gǔ tou 硬骨頭 resolute individuala hard nut to cracktough missiondifficult task Its characters 硬yìnghard; stiff; solidHSK 5骨gǔbone头tóuheadHSK 2