Senior (education)
WordNet
adjective
(1) 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"
(2) Older; higher in rank; longer in length of tenure or service
"Senior officer"
noun
(3) A person who is older than you are
(4) An undergraduate student during the year preceding graduation