four score and ten

Definitions

1. A human lifespan.
2. Used other than figuratively or idiomatically: see four, score, ten. 90.

Examples

“Our four score⟳ and ten are a mere twelve or thirteen years to a dog.”

“I have⟳ completed my four-score-and-ten, but physical age seems to be less important than life insurance statistics would indicate⟳.”

“when I was in the Army there were some guys who said they'd rather die⟳ in combat— go down fighting— than live⟳ out their four score⟳ and ten.”

CEFR level