plonk

Noun

• the noise of something dropping (as into liquid)

• a cheap wine of inferior quality

Verb

• set (something or oneself) down with or as if with a noise
  • He planked the money on the table
    
  • He planked himself into the sofa
    

Related words

• Synonyms: 
  plank , flump , plop , plunk , plump down , plunk down , plump