One of four equal parts. A coin equal to one fourth of the dollar of the United States and Canada. One fourth of an hour; 15 minutes. One fourth of a year; three months: Sales were up in the second quarter. An academic term lasting approximately three months. Astronomy One fourth of the period of the moon's revolution around Earth. Astronomy One of the four phases of the moon: the first quarter; the third quarter. Sports One of four equal periods of playing time into which some games, such as football and basketball, are divided. One fourth of a yard; nine inches. One fourth of a mile; two furlongs. One fourth of a pound; four ounces. One fourth of a ton; 500 pounds. Used as a measure of grain. Chiefly British A measure of grain equal to approximately eight bushels. One fourth of a hundredweight; 25 pounds. One fourth of a British hundredweight; 28 pounds. One of the four major divisions of the compass. One fourth of the distance between any two of the 32 divisions of the compass. One of the four major divisions of the horizon as determined by the four major points of the compass. A region or an area of the earth thought of as falling into such a specific division of the compass. Nautical The general direction on either side of a ship located 45\u00b0 off the stern. Nautical The upper portion of the after side of a ship, usually between the aftermost mast and the stern. Nautical The part of a yard between the slings and the yardarm. Heraldry Any of four equal divisions of a shield. One leg of an animal's carcass, usually including the adjoining parts. Either side of a horse's hoof.