Definitions

1. noun

a variant of Zack, a shortened form of Zachariah or Zachary

“He’s known as Zack to his friends.”

2. verb

to hit or strike something suddenly or forcefully, often with a sharp blow

“The boxer zacked his opponent with a powerful punch.”

3. interjection

an expression of surprise or excitement

“Zack! What a beautiful view from the top!”