This is the 3396th most frequent Russian word.
посуду
"Dishes" or "tableware."
In this sentence, 'посуду' is the direct object of the verb 'мою' (wash), indicating the item being cleaned (dishes).
Я мою посуду после ужина.
I wash the dishes after dinner.
Here, 'посуду' refers to objects in the kitchen and is part of a noun group describing items requiring action.
На кухне стоит посуду, которая требует мытья.
In the kitchen, there are dishes that need washing.
In this case, 'посуду' stands for new tableware items purchased for an upcoming event.