This is the 2050th most frequent Polish word.
lada
Counter.
In this sentence, 'lada' refers to a counter in a shop, specifically the bakery counter for transactions.
Kupiłem bułki na ladzie piekarni.
I bought rolls on the bakery counter.
Here, 'lady' is used as the object form of 'lada,' again denoting the counter or surface area in a shop or establishment.
Klient podszedł do lady, aby złożyć zamówienie.
The customer approached the counter to place an order.
The word 'ladzie' in this sentence is in the locative case, referring to the counter where the speaker is situated.