A mixture of clay and/or silt with water to form a plastic mass with a particle size preponderantly below 0.06 mm diameter. It is deposited in low-energy environments in lakes, estuaries and lagoons. It may also be deposited in deep-sea environments.
(Source: WHIT)
Soaked clay or soil; very soft ground.
To soil with mud, muck, or mire.
(oil extraction) A mixture of base substance and additives used to lubricate the drill bit and to counteract the natural pressure of the formation.
soil with mud, muck, or mire; "The child mucked up his shirt while playing ball in the garden"