lustrum

Two presidential lustrums of Grant and one of Hayes had erased from the hearts of men the burning sensations of impeachment.

The latter may well be the case, for I remember that during each lustrum of my life Don Quixote has made a different impression upon me.

He had already reached the lustrum that would fill his threescore years, and life seemed slipping from beneath him, while its great object remained unachieved.

It is only once in a lustrum that I visit my Uncle Theodore.

Hence the name of lustrum came to denote the intercensal term, or a period of five years.