1. eighty-first - Noun
2. eighty-first - Adjective
eighty-first
The ordinal form of the number eighty-one, describing a person or thing in position number 81 of a sequence.
The answer appears on the eighty-first page of the book.
She finished eighty-first in the race.
eighty-first (plural eighty-firsts)
One of eighty-one equal parts of a whole.
An eighty-first of 1620 is 20.
It was the afternoon of my eighty-first birthday, and I was in bed with my catamite when Ali announced that the archbishop had come to see me. Anthony Burgess