sunflower

Short definition from Wiktionary

Noun

1. 1
   Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers.
2. 2
   Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers: The commonly cultivated species, Helianthus annuus, a native of America.
3. 3
   A bright yellow, like that of the flower petals.
4. 4
   Any flat, radially symmetric organic compound, such as coronene.
5. 5
   Synonym of worm-star.
6. 6
   An Automatic Warning System (AWS) indicator in the driver's cab that is displayed after a driver has acknowledged an audible warning, which consists of a yellow circle enclosing a white circle, with black spokes overlaid.

Proper noun

1. 1
   The ship of characters Sunny and Basil from the videogame Omori.