buckwheat

Short definition from Wiktionary

Noun

1. 1
   An Asian plant, of the species Fagopyrum esculentum.
2. 2
   The fruit of this plant used as a pseudocereal.
3. 3
   Any of the wild buckwheats in the genus Eriogonum.
4. 4
   A slow and painful murder by the Mafia as a warning to others.
5. 5
   Curly hair of a black person.
6. 6
   Pubic hair.

Proper noun

1. 1
   Barack Obama.