gratuity/grəˈtju:ətɪ; ?@ -ˈtu:-; ɡrə`tuətɪ/ n1 (fml 文) money given to sb who has done one a service; tip 报酬; 小帐; 小费.2 (Brit) money given to a retiring employee 养老金; 退休金.
牛津英汉双解词典