This is the 614th most frequent Serbian word.
лука
The Serbian word "лука" means "port" or "harbor" in English.
Here, 'Лука' is used as a proper noun, a personal name meaning 'Luka'.
Лука је био на плажи током распуста.
Luka was at the beach during the vacation.
In this sentence, 'луку' refers to onions in its singular accusative form.
На пијаци сам купио свежу луку.
I bought fresh onions at the market.
Here, 'луку' signifies a harbor in the singular accusative form.