senior citizen
noun🔊/ˌsiːniə ˈsɪtɪzn/
🔊/ˌsiːniər ˈsɪtɪzn/
(also senior especially in North American English)
an older person, especially somebody who has retired from work. People often call somebody a ‘senior citizen’ to avoid saying that they are old or using the expression ‘old-age pensioner’. 资深公民，老年人（委婉说法，尤指退休者） discounts/travel concessions for senior citizens 老年人的折扣/旅行优惠