muck

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muck

[mək]
(civil engineering)
Rock or earth removed during excavation.
(geology)
Dark, finely divided, well-decomposed, organic matter intermixed with a high percentage of mineral matter, usually silt, forming a surface deposit in some poorly drained areas.
(mining engineering)

muck

1. An organic soil of very soft consistency; also called muck soil.
2. Material to be excavated; clay, dirt, loam, stone, etc.
3. The material so excavated.