Plural of dredger; multiple people, boats, or machines used for dredging operations.
Simple plural of 'dredger', formed by adding '-s' to the agent noun. Standard English pluralization of occupational and equipment-related nouns.
During major port construction projects, you'd have dozens of dredgers working simultaneously—they were the heavy machinery of the 19th and 20th centuries, as impressive then as bulldozers are today.
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