plural twenties
Definition of twenty
1
: a number equal to two times 10 — see Table of Numbers
2
twenties plural
: the numbers 20 to 29
specifically
: the years 20 to 29 in a lifetime or century
3
: a 20-dollar bill
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Merriam-Webster unabridged
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Time Traveler for twenty
The first known use of twenty was in the 13th century
See more words from the same century