This is the 847th most frequent Serbian word.
воду
The Serbian word "воду" means "water" (accusative singular form).
The word 'воду' here is in the accusative case, indicating the direct object of the verb 'додај' (pass).
Молим те, додај ми воду.
Please, pass me the water.
In this sentence, 'воду' is in the accusative case, denoting the object of preposition 'по' which implies purpose or reason of the action.
Идем по воду из бунара.
I am going to fetch water from the well.
Here, the word 'водом' is in the instrumental case, expressing the means by which the garden is watered.