Main Entry: ¹se·nior

Pronunciation: \ˈsē-nyər\

Function: noun

Etymology: Middle English, from Latin, from senior, adjective

Date: 14th century

1 : a person older than another <five years my senior>
2 a : a person with higher standing or rank b : a senior fellow of a college at an English university c : a student in the year preceding graduation from a school of secondary or higher level
3 capitalized : a member of a program of the Girl Scouts for girls in the 9th through 12th grades in school
4 : senior citizen