- (n.) 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 is 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.
- (n.) The friar bird; -- so called from its cry, which resembles these words.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). four-o'clock. Retrieved September 21, 2026, from http://smartdefine.org/four-o%27clock/definitions/2009868 |
| Chicago | Webster's. 2011. "four-o'clock" http://smartdefine.org/four-o%27clock/definitions/2009868 (accessed September 21, 2026). |
| Harvard | Webster's 2011, four-o'clock, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/four-o%27clock/definitions/2009868>. |
| MLA | Webster's. "four-o'clock" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/four-o%27clock/definitions/2009868> |