rictusnoun [ C ]
/ˈrɪk.təs/an expression in which someone shows their teeth in a smile, but looks strange or in pain rather than looking happy and relaxed:
When I mentioned her name, his wide smile stiffened into a rictus.
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。