Flump (sweet)
WordNet

verb


(1)   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"
(2)   Fall heavily
WiktionaryText

Verb



  1. to move or fall heavily, or with a dull sound
  2. to drop something heavily or with a dull sound
 
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