This is the 6017th most frequent Russian word.
снегом
The Russian word "снегом" means "with snow" or "by snow" (instrumental case of "снег" - snow).
The word 'снегом' here denotes the instrumental case, indicating that the yard is 'covered by snow'.
Во дворе всё покрыто снегом.
The yard is covered with snow.
In this sentence, 'снегом' is used as an object in a metaphorical sense, showing interaction with snow in a playful context.
Мы играли в снежки и смеялись над снегом.
We played snowballs and laughed at the snow.
This usage demonstrates how 'снегом' can describe the agent causing a condition, such as the obstruction caused 'by snow.'