Definify.com

Webster 1913 Edition

Noun.

(Bot.)

A plant of the genus

Mirabilis

. There are about half a dozen species, natives of the warmer parts of America. The common

four-o’clock

M. Jalapa

. Its flowers are white, yellow, and red, and open toward sunset, or earlier in cloudy weather; hence the name. It is also called

marvel of Peru

, and

afternoon lady

(Zool.)

The friar bird; – so called from its cry, which resembles these words.

See also: four o'clock

four-o'clock ‎(plural four-o'clocks)

Any of several plants, of the genus Mirabilis, whose funnel-shaped flowers open in late afternoon
The friarbird; so called from its cry, which resembles these words.