What is another word for "zone"?

Roget's Thesaurus (1911) lists these synonyms for "zone": ambit, baldric, band, bed, belt, board, cingle, circlet, circuit, circumference, clasp, coast, coat, contour, cordon, course, cover, covering, cut, dess, escarpment, eschar, film, flag, flagstone, flake, floor, foil, girdle, girt, girth, inclosure, integument, lamella, lamina, layer, leaf, line, membrane, nest.