A person who is older or has a higher rank or status than others. The senior members of the team were given the responsibility to lead the project.
A student in the final year of high school or college. As a senior, she was excited to graduate and start her career.
An elderly person, often referred to in the context of social services or benefits. The community center offers various activities for seniors to enjoy.
A man who bears the same name as his son and is distinguished from him by the addition of “Sr.” or “Senior” after his name. After John Smith Senior retired, John Smith Junior took over the family business.
A father (or other elder relative) who has the same name as a younger family member, used after the name to distinguish them (abbreviated Sr.). John Williams Sr. attended the graduation to support his namesake son.