Sand easily moved or readily yielding to pressure; especially, a deep mass of loose or moving sand mixed with water, sometimes found at the mouth of a river or along some coasts, and very dangerous, from the difficulty of extricating a person who begins sinking into it.
Each morning my characters greet me with misty faces willing, though chilled, to muster for another day's progress through the dazzling quicksand the marsh of blank paper. John Updike
I think viewers quite like it when I'm suffering or eating or drinking something horrible or really up against it in some quicksand or whatever. Bear Grylls
Luxury! more perilous to youth than storms or quicksand, poverty or chains. Hannah More
