1. to hit someone or something with the palm of your hand
2. to close and open your lips quickly to make a sharp sound

1. a sharp hit with the palm of your hand
2. a sharp sound made by closing and opening your lips quickly
3. a small amount or trace of something
Usage: informal

1. directly or exactly
Usage: informal

Examples

• She smacked the mosquito on her arm.
• He smacked his lips after tasting the soup.
• The ball hit the wall with a loud smack.
• She gave him a smack on the shoulder.
• There’s a smack of garlic in this sauce.
• The arrow landed smack in the center of the target.
• He walked smack into the glass door.