in geometry, the remaining part of the diameter of a circle, after the versed sine is taken from it. See GEOMETRY.

COVERT-WAY, or CORRIDOR, in fortification, a space of ground, level with the field on the edge of the ditch, three or four fathoms broad, ranging quite round the half moons and other works toward the country. It has a parapet raised on a level, together with its banquets and glacis. See FORTIFICATION.