n. Coarse sand; a mass of pebbles or of pebbles and sand mixed; stone in a mass of small irregular fragments.n. Specifically, in geology, the rolled and water-worn material formed from fragments of rock under the combined influence of atmospheric agencies and currents of water.n. In pathology, small concretions or calculi resembling sand or gravel which form in the kidneys, pass along the ureters to the bladder, and are expelled with the urine; the disease or morbid state characterized by such concretions.n. In brewing, the appearance of yeast-cells swimming in clear beer in the form of fine gravel.To cover with gravel; fill or choke with gravel: as, to gravel a walk; to gravel a fountain.To bury.To cause to stick in gravel or sand.Hence To bring to a standstill through perplexity; embarrass; puzzle; nonplus.To hurt the foot of, as a horse, by the lodging of gravel under the shoe.