This is the 14579th most frequent Russian word.
пень
"Пень" in English means "tree stump."
Literal meaning referring to a tree stump.
Я увидел старый пень в лесу.
I saw an old stump in the forest.
Literal meaning emphasizing the obstacle.
Как ты мог не заметить этот пень на дороге?
How could you not notice that stump on the road?
Figurative meaning indicating stubbornness or lack of understanding.