nailn.钉子；指甲；爪vt.钉；抓住；使固定nailbitingadj.令人紧张的；nnailheadedadj.钉头形的(楔形的)nailhammern.钉锤nail brush指甲刷nail start钉子松动nailnapper指甲钳nail hamme穿钉锤nail plate趾甲板,钉接板,指甲板nail favus甲黄癣nail punch钉冲头,钉形冲头,冲钉器