The term 'oozing muck' can be summarized by the crossword solution of 'SLIME'. SLIME is a thick, viscous substance that is usually composed of water and a thickening agent. It is often slimy to the touch and can be found in a variety of colors. SLIME is often associated with children's toys and activities, but it can also be found in nature, such as in the mucus secreted by some animals. SLIME has also been used in various industrial applications, such as lubricants and adhesives.