black bean

Short definition from Wiktionary

Noun

1. 1
   A bean plant with black seeds.
2. 2
   A dried seed of a black bean plant.
3. 3
   A dried black seed of certain varieties of the common bean (Phaseolus vulgaris).
4. 4
   A fermented soybean, used in Asian cooking.
5. 5
   An Australian tree of species Castanospermum australe.