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general::
Phrase(s): clunk something down
to drop or place something heavily on something so that it makes a clunking noise. • He clunked the big box down on the table. • He clunked down all his school books on the table., Phrase(s): clunk down
[for something] to drop or fall, making the sound "clunk." • A large piece of metal clunked down right in front of me. • A tree branch clunked down on the roof and damaged a few shingles.
McGrawhill's American Idioms And Phrasal Verbs