The decade of the 1820s, 1920s, 2020s, etc. / The decade of one's life from age 20 through age 29. / (temperature, rates, plural only) The range between 20 and 29.

plural of twenty

From or evoking the 21st through 30th years of a century (chiefly the 1920s).

Having normal visual acuity.

(colloquial) A banknote with a denomination of 20. / (CB slang) 10-20 (location). / (UK, historical, military) An old English division of infantry.

The cardinal number 20, occurring after nineteen and before twenty-one.

Obsolete spelling of twenty

A hamlet in Bourne parish, South Kesteven district, Lincolnshire, England (OS grid ref TF1520).

The 1920s, referring to the rapid economic expansion and modernization of the period.

(historical) Five-twenty bonds of the United States (bearing six per cent interest), issued in 1862, '64, and '65, redeemable after five and payable in twenty years.