an old or elderly person.
(in the British navy) a midshipman of four years' standing.
Origin of oldster
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for oldsterhead, ancient, matriarch, patriarch, grandfather, grandmother, elder, old-timer, pensioner, doyen, doyenne, first-born, golden-ager
informal an older person
British navy a person who has been a midshipman for four years
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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