1

twenty-first

adjective

Definition of twenty-first

1 :being number 21 in a countable series
  • the twenty-first day
— see Table of Numbers
2 :being one of 21 equal parts into which something is divisible
  • a twenty-first share of the money

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2

twenty-first

noun \ " \

Definition of twenty-first

1 :number 21 in a countable series
  • the twenty-first of the month
2 :the quotient of a unit divided by 21 :one of 21 equal parts of something
  • one twenty-first of the total

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