in geography, a great circle of the terrestrial globe, equidistant from its poles, and dividing it into two equal hemispheres; one north, and the other south. See GEOGRAPHY.

EQUIRY, in the British customs, an officer of state, under the master of the horse.

There are five equerries, who ride abroad with his majesty: for which purpose they give their attendance monthly, one at a time, and are allowed a table.

As to the equerries of the crown stable, they have this distinct appellation, as being employed in mounting, managing, and breaking the saddle-horses for his majesty's use, and holding his stirrup.