blue mud

noun

Geology, Oceanography.

1. a deep-sea sediment of fine silt and clay that derives its bluish color from organic material and iron sulfide.

Word History and Origins

Origin of blue mud¹

An Americanism dating back to 1830–40

Example Sentences

Beneath his painted vest, a plaster of fig leaves and caked blue mud covered the wound on his breast.

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Deftly, with a delicacy surprising in such a big man, he began to scrape away the black leaves and dried blue mud from Drogo's chest.

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Blue Mud Bay was so named by him on account of the nature of the bottom.

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The Golden Hope was lying immediately over a white sandy 'patch, though both her anchors were embedded in blue mud, which formed an excellent holding-ground.

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Lots of yellow, of course, from the sulphur,—crystals of it, some of them neighbor to an orange tinted crystal, lying in the blue mud.

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