This is the 3847th most frequent Polish word.
placu
The Polish word "placu" is the genitive or locative form of "plac," meaning "square" (an open, public space in a city or town).
Here, 'placu' refers to the locative case of 'plac zabaw', meaning 'playground', and indicates location where the action occurs.
Dzieci bawiły się na placu zabaw.
The children were playing at the playground.
In this case, 'placu' represents the genitive case of 'plac', meaning 'square', often used to describe an open area in an urban context.
W centrum miasta znajduje się duży plac.
There is a large square in the city center.
Here, 'placu' is again in the locative case of 'plac', indicating the location where the gathering occurred.