paradajz

1. tomato
   Kupi mi kilo paradajza na pijaci. — Buy me a kilo of tomatoes at the market.
   Seljačka salata ima paradajz, krastavac i luk. — A country salad has tomatoes, cucumber and onion.
2. (of the plant) tomato plant
   U bašti gajimo paradajz i papriku. — We grow tomatoes and peppers in the garden.

It is often used as a mass noun in the singular: "kilo paradajza" means "a kilo of tomatoes".