This is the 14713th most frequent Russian word.
перцем
The Russian word "перцем" means "with pepper" (instrumental case of "перец").
In this sentence, 'перцем' refers to ground pepper, a seasoning used for flavoring food.
Я приправил суп перцем.
I seasoned the soup with pepper.
Here, 'перцем' metaphorically refers to something causing a sudden and strong reaction, using pepper as an example due to its sharpness.
Он испугался и побледнел, словно его ударили перцем.
He got scared and turned pale, as if he was hit with pepper.
In this context, 'перцем' refers to whole pepper, like chili or bell peppers, used as an ingredient in cooking.