WordWeb Online

1. A heavy dull sound (as made by impact of heavy objects)
   - thump, thumping, clump, clunk, thud

1. Make a loud thud
    
2. [informal] Hit hard
   "He clonked his opponent";
   - sock [informal], bop [informal], whop [informal], whap [N. Amer, informal], bonk [informal], bash [informal], boink [N. Amer, informal], whack [informal], wham [informal], wallop [informal], lamp [UK, informal], clock [UK, informal], belt [informal]

Derived forms: clonking, clonked, clonks

Type of: hit, sound

Encyclopedia: Clonk