Definitions

1. interjection

an expression of surprise, shock, or excitement

“When the concert tickets went on sale, she exclaimed, ‘Holycow, I got tickets!’”

2. noun

an expression of surprise, shock, or excitement

“The loud ‘holycow’ from the crowd surprised the musician.”

3. exclamation

an expression of surprise, shock, or excitement

“Holycow, this new restaurant has amazing food!”