
1) Belle de nuit 2) Ipomoea alba 3) Morning glory
Found on
https://www.crosswordclues.com/clue/moonflower

• (n.) A kind of morning glory (Ipomoea Bona-nox) with large white flowers opening at night. • (n.) The oxeye daisy; -- called also moon daisy.
Found on
http://thinkexist.com/dictionary/meaning/moonflower/

(from the article `Ipomoea`) ...leaves and purple, pink, or white flowers about 7 cm (3 inches) across, has become a troublesome weed in parts of southeastern North America. One ...
Found on
http://www.britannica.com/eb/a-z/m/118

(Calonyction) These are gorgeous, herbaceous plants that climb. They bloom in the evening and are related to the Morning Glory. They grow wild in the tropics of both hemispheres. C. aculeatum is the most common kind. It can reach a height of 15 feet or more. It's covered with lovely leaves and white, fragrant flowers that resemble trumpets, up to 6...
Found on
http://www.encyclo.co.uk/local/10004
Moon'flow`er noun (Botany) (a) The oxeye daisy; -- called also
moon daisy .
(b) A kind of morning glory (
Ipomœa Bona-nox ) with large white flowers opening at night.
Found on
http://www.encyclo.co.uk/webster/M/99

Moonflower: An hallucinogenic but poisonous plant known scientifically as Datura that has white flowers that bloom at night. Moonflowers contain scopolamine and hyoscyamine, both of which can cause anticholinergic poisoning. Symptoms occur typically within an hour after ingestion and continue for 24-48 hours. Ingestion causes a classic anticholiner...
Found on
http://www.medterms.com/script/main/art.asp?articlekey=24178

[
n] - pantropical climber having white fragrant nocturnal flowers
Found on
http://www.webdictionary.co.uk/definition.php?query=moonflower
belle de nuit noun pantropical climber having white fragrant nocturnal flowers
Found on
https://www.encyclo.co.uk/local/20974

a plant, Ipomoea alba, of the morning glory family, having fragrant white flowers that bloom at night.
Found on
https://www.infoplease.com/dictionary/moonflower
No exact match found.