eighty-first /ˈeɪ.ti fɜːɹst/adjective 1noun 1forms 1 adjective1 •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. noun1 •One of eighty-one equal parts of a whole.An eighty-first of 1620 is 20. formseighty-firsts
