blue mud

American  

noun

Geology, Oceanography.

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

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Etymology

Origin of blue mud

An Americanism dating back to 1830–40

Example Sentences

See Examples For:

blue mud

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

From "A Game of Thrones" by George R.R. Martin

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 "A Game of Thrones" by George R.R. Martin

Apparently depths are fairly uniform from 85 to 95 fathoms, the bottom of the ridge being of coarse black sand and having blue mud in the deeper area around it.

From Fishing Grounds of the Gulf of Maine by Rich, Walter H.

But the pink brains were all daubed with blue mud, just now, and if the Pink Kitten should see the Glass Cat in such a condition, it would be dreadfully humiliating.

From The Magic of Oz by Baum, L. Frank (Lyman Frank)

I was presented with a bottle of water thick with blue mud.

From The Incomparable 29th and the "River Clyde" by Davidson, George