The chuck roastis a larger version of the chuck steak containing parts of the shoulder bones, and is often known as a "7 bone roast" as the shape of the shoulder bone in cross section resembles the numeral '7'.  The classic pot roast cut of beef.  Very flavorful braised, browned and slow cooked in water.   Add veggies and greens to make a memorable meal. Most roast are 3-4 lbs.