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Definition of oldster noun from the Oxford Advanced Learner's Dictionary

oldster

noun
 
/ˈəʊldstə(r)/
 
/ˈəʊldstər/
(especially North American English, informal)
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  1. an older person
    Word Originearly 19th cent.: from old, on the pattern of youngster.
See oldster in the Oxford Advanced American Dictionary
immunize
verb
 
 
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