1) Cherry of Europe 2) Heart cherry 3) Mazzard 4) Mazzard cherry 5) Prunus avium 6) Sweet cherry 1) Mazzard 
• (n.) A species of cherry tree common in Europe (Prunus avium); also, the fruit, which is usually small and dark in color.
Gean noun [ French guigne the fruit of the gean; confer Old High German wīhsila , German weichsel .] (Botany) A species of cherry tree common in Europe ( Prunus avium ); also, the fruit, which is usually small and dark in color. 
The gean (Prunus Avium) is a wild cherry tree found in Britain. It has fruit which are red when unripe, and a deep purple or black when ripe. The timber can be used for making furniture.
[n] - wild or seedling sweet cherry used as stock for grafting