CHESIL BANK (A.S., ceosol, pebble bank), a remarkable beach of shingle on the coast of Dorsetshire, England. It is sep arated from the mainland for 8m. by an inlet called the Fleet, famous for its swannery, and continues in all for 18m. south eastward from near Abbotsbury, terminating at the so-called isle of Portland. At the Portland end it is 3 5f t. above spring tide level, and 2ooyd. wide; while at the landward end the width is I 7 oyd. and the pebbles decrease in size. This accords with the general movement of shingle along this coast from west to east.