bucket ladder
noun
- a series of buckets that move in a continuous chain, used to dredge riverbeds, etc, or to excavate land
- (as modifier)a bucket-ladder dredger
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for bucket ladder
Historical Examples of bucket ladder
A suction dredger being unsuited to the work, a bucket-ladder dredger was employed.