1. to hit something hard with a flat object, making a sharp sound

1. a hard hit with a flat object that makes a sharp sound

Examples

• She thwacked the ball with her tennis racket.
• The teacher thwacked the ruler against the desk to get attention.
• He gave the carpet a good thwack to shake out the dust.
• The sound of the thwack echoed through the gymnasium.
• With one swift thwack, she swatted the fly.
• The baseball made a satisfying thwack as it hit the bat.
• She heard the thwack of the newspaper hitting the front door.