senior

adj

1. Older.

   “senior citizen”

2. Higher in rank, dignity, or office; superior.

   “senior member; senior counsel”

3. (US)Of or pertaining to a student's final academic year at a high school (twelfth grade) or university.
4. (Canada, US)Of or pertaining to a league or competition limited to players above a certain age or level of experience.

   “senior hockey”

5. Synonym of elder.

   “1923, Ernest Bramah, The Eyes of Max Carrados It is unusual for the senior hand to leave even one of the five cards to which he is entitled. It indicated an unusually strong hand.”

noun

1. (US)An old person.

   “Grave and reverend seniors seemed to have caught the prevailing spirit as badly as the students, and I saw white-bearded men rising and shaking their fists at the obdurate Professor.”

2. Someone older than someone else (with possessive).

   “He was four years her senior.”

3. Someone seen as deserving respect or reverence because of their age.
4. (obsolete)An elder or presbyter in the early Church.

   “Then Peter full of the holy gooſt ſayd vnto them. Ye ruelars of the people / and ſeniours of iſrahel[…].”

5. Somebody who is higher in rank, dignity, or office.
6. (Philippines, US)A final-year student at a high school or university; a finalist.

name

1. A surname.