More advanced than another in age; prior in age; elder; hence, more advanced in dignity, rank, or office; superior; as, senior member; senior counsel.
Belonging to the final year of the regular course in American colleges, or in professional schools.
A person who is older than another; one more advanced in life.
One older in office, or whose entrance upon office was anterior to that of another; one prior in grade.
An aged person; an older.
One in the fourth or final year of his collegiate course at an American college; -- originally called senior sophister; also, one in the last year of the course at a professional schools or at a seminary.
I am running for president to help create a better future. A future where everyone who wants a job can find one. Where no senior fears for the security of their retirement. An America where every parent knows that their child will get an education that leads them to a good job and a bright horizon. Mitt Romney
People ask me if there are going to be stories of Harry Potter as an adult. Frankly, if I wanted to, I could keep writing stories until Harry is a senior citizen, but I don't know how many people would actually want to read about a 65 year old Harry still at Hogwarts playing bingo with Ron and Hermione. J. K. Rowling