Wiktionary
septenaries
n. (plural of septenary English)
Usage examples of "septenaries".
Dudley Venner had a kind of superstition, too, that, if Elsie could only outlive three septenaries, twenty-one years, so that, according to the prevalent idea, her whole frame would have been thrice made over, counting from her birth, she would revert to the natural standard of health of mind and feelings from which she had been so long perverted.