1. (

• senior

) an undergraduate student during the year preceding graduation ;

2. (

• elder ,
• senior ,

) a person who is older than you are ;

1. (

• senior

) older; higher in rank; longer in length of tenure or service; "senior officer" ;

2. (

• senior ,
• fourth-year

) used of the fourth and final year in United States high school or college; "the senior prom" ;

3. (

• aged ,
• elderly ,
• older ,
• senior

) advanced in years; (`aged' is pronounced as two syllables); "aged members of the society"; "elderly residents could remember the construction of the first skyscraper"; "senior citizen" ;