Senior is a common euphemism for an old person used in American English, and sometimes in British English. It implies that the person being referred to is retired. This in turn usually implies that the person is over the retirement age, which varies according to country. Synonyms include old age pensioner or pensioner in British English, and retiree and senior citizen in American English. Some dictionaries describe widespread use of “senior” for people over the age of 65.When defined in an official context, senior is often used for legal or policy-related reasons in determining who is eligible for certain benefits available to the age group.