"seniour" is probably misspelled. Trying senior instead Definition of senior
senior has definitions from the field of education
1
[ adjective ] older; higher in rank; longer in length of tenure or service

Examples

"senior officer"

2
[ noun ] (education) an undergraduate student during the year preceding graduation
3
[ adjective ] (education) used of the fourth and final year in United States high school or college

Synonyms

fourth-year

Examples

"the senior prom"

4
[ adjective ] advanced in years; (`aged' is pronounced as two syllables)

Synonyms

older elderly aged

Examples

"aged members of the society" "elderly residents could remember the construction of the first skyscraper" "senior citizen"

5
[ noun ] Last name, frequency rank in the U.S. is 11454
6
[ noun ] a person who is older than you are

Synonyms

elder

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