four o'clock

/fɔər əˌklɑk/

/fɔ əˈklɒk/

Other forms: four o'clocks

Definitions of four o'clock

1. noun

   any of several plants of the genus Mirabilis having flowers that open in late afternoon
   types:

   Mirabilis jalapa, Mirabilis uniflora, common four-o'clock, marvel-of-Peru

   common garden plant of North America having fragrant red or purple or yellow or white flowers that open in late afternoon

   California four o'clock, Mirabilis californica, Mirabilis laevis

   California four o'clock with purple-red flowers

   Mirabilis longiflora, maravilla, sweet four o'clock

   leafy wildflower having fragrant slender white or pale pink trumpet-shaped flowers; southwestern United States and northern Mexico

   Colorado four o'clock, Mirabilis multiflora, desert four o'clock, maravilla

   wildflower having vibrant deep pink tubular evening-blooming flowers; found in sandy and desert areas from southern California to southern Colorado and into Mexico

   Mirabilis oblongifolia, mountain four o'clock

   leafy wildflower with lavender-pink flowers that open in the evening and remain through cool part of the next day; found in open woods or brush in mountains of southern Colorado to Arizona and into Mexico

   type of:

   flower

   a plant cultivated for its blooms or blossoms