Crushed stone is produced by crushing quarry rock, boul-ders, cobbles, or large-size gravel. Crushed air-cooled blast-furnace slag is also used as fine or coarse aggregate. The aggregates are usually washed and graded at the pit or plant. Some variation in the type, quality, cleanli-ness, grading, moisture content, and other properties is expected. Find English word Gravel meaning in Urdu at UrduWire online English to Urdu dictionary. Gravel thousands of English and Urdu words Synonyms, definition and meaning.