Definition of noon-flower in US English:

noon-flower

noun

  • Chiefly Australian and South African. Any of the plants belonging or formerly belonging to the genus Mesembryanthemum (family Aizoaceae), many of which flower only around midday. Compare midday flower).

Origin

Mid 19th century. From noon + flower, after post-classical Latin mesembrianthemum.

Pronunciation

noon-flower

/ˈnuːnˌflaʊə/