What is a deposit of small calculous concretions in the kidneys and the urinary or gall bladder; also, the disease of which they are a symptom. Gravel powder, a coarse gunpowder; pebble powder called?

gravel — (Med.) A deposit of small calculous concretions in the kidneys and the urinary or gall bladder; also, the disease of which they are a symptom. Gravel powder, a coarse gunpowder; pebble powder. (Webster's 1913.)

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