This is the 8042nd most frequent Russian word.
крестьянский
"Peasant" or "related to peasants/rural."
The word "крестьянский" describes something that belongs to or is characteristic of peasants, in this sentence referring to the house.
Крестьянский дом стоит посреди поля.
The peasant's house stands in the middle of the field.
Here, "крестьянский" refers to tools used by peasants, indicating their origin or traditional use.
В этом музее можно увидеть крестьянские инструменты.
In this museum, one can see peasant tools.
In this case, "крестьянский" metaphorically describes personality traits associated with peasants, such as hard work and simplicity.