/ˈsi:niə(r) ||; ˈsinjɚ/adj1 senior (to sb) having a high or higher position in a company, organization, etc （地位或等级）较高的: a senior lecturer/officer/manager 高级讲师╱军官╱经理He's senior to me. 他的职位比我高。
2 oftenSenior(abbr Snr) (abbr Sr) (especially US 尤为美) used after the name of a man who has the same name as his son, to avoid confusion （父与子同名时，用于表示父辈）
3 (Brit 英) (used in schools) older （用于学校）高年级的
4 (US 美) connected with the final year at high school or college （中学或学院里）毕业班的 ☞Look at junior ¹. 参看junior^1。