(now chiefly US) An old person.

Someone older than someone else (with possessive).

Someone seen as deserving respect or reverence because of their age.

Somebody who is higher in rank, dignity, or office.

(US, Philippines) A final-year student at a high school or university.

Older; superior

Higher in rank, dignity, or office.

(US) Of or pertaining to a student's final academic year at a high school (twelfth grade) or university.