A year that does not contain the day February 29.

The periodical cicada.

Alternative form of Happy New Year

A flood event that has a 1% probability of occurring in any given year; an exceptionally large flood.

plural of 100-year flood

A tropical climbing plant (Ipomoea tuberosa) related to the morning glory.

A rubiaceous shrub (Genipa clusiifolia) growing in the West Indies. / Its edible fruit.

A century egg (Chinese egg dish)

plural of dollar-a-year man

(historical) Any number of American executives who mobilized the United States for the World Wars in exchange for a salary of $1.