trešnja

1. (of the fruit) cherry; sweet cherry
   Na pijaci su trešnje sada jeftine. — Cherries are cheap at the market now.
   Deca su pojela ceo kilogram trešanja. — The kids ate a whole kilo of cherries.
2. (of the tree) cherry tree
   Ispred kuće raste stara trešnja. — An old cherry tree grows in front of the house.

Trešnja is the sweet cherry; the sour cherry is višnja.