Definition of "septuagenarian"

For a ley hunter, local people – particularly the elderly – can be mines of information. Devereux and Thomson recount how they asked a septuagenarian in a remote village the location of an elusive stone, without mentioning the subject of leys: […]

2010, Philip Carr-Gomm, Richard Heygate, The Book of English Magic

Mary Moon, she's a vegetarian.Mary Moon, Mary Moon, Mary Moon.Mary Moon, who will outlive all the septuagenarians.

1994, “New Age Girl”, in A Different Story, performed by Deadeye Dick