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.

From Literature

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.

From Literature

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

From Project Gutenberg

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.

From Project Gutenberg

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.

From Project Gutenberg