english
1
general::
Perish one by one, as in A celibate community, the Shakers are dying off. [Late 1600s]
American Heritage Idioms
2
general::
Phrase(s): die off [for a living thing] to perish one by one until there are no more. • Most of the larger lizards died off eons ago. • It would be really bad if all the owls died off. • The cucumber blossoms all died off.
McGrawhill's American Idioms And Phrasal Verbs