1. eighty-fourth - Noun
2. eighty-fourth - Adjective
eighty-fourth
The ordinal form of the number eighty-four, describing a person or thing in position number 84 of a sequence.
The answer appears on the eighty-fourth page of the book.
She finished eighty-fourth in the race.
eighty-fourth (plural eighty-fourths)
One of eighty-four equal parts of a whole.
An eighty-fourth of 1680 is 20.