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four-o'clock definition

four·-o'clock (fôr′ə kläk′)

adjective

designating a family (Nyctaginaceae, order Caryophyllales) of dicotyledonous plants, including the bougainvilleas

noun

any of a genus (Mirabilis) of chiefly tropical American plants of the four-o'clock family, bearing petal-less flowers and, often, brightly colored leaves; esp., a garden plant (M. jalapa) with long-tubed blossoms that generally open at about 4:00

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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