What does the word eightieth mean?

Usage examples for eightieth

  1. One of the present writers saw him there in 1871. He was then quite blind, but happy and vigorous, though in his eightieth year. – Autobiography of Friedrich Froebel by Friedrich Froebel
  2. To this he added- Eightieth day, 11. 40 a. – Round the World in Eighty Days by Jules Verne
  3. The riot's been put down, he continued, but we're keeping two companies of Kragans in the city, and about a dozen airjeeps patrolling the section from Eightieth down to Sixty- fourth, and from the waterfront back to Eighth Avenue. – Uller Uprising by Henry Beam Piper, John D. Clark and John F. Carr