rising, as the sun.-eastern; oriental.-bright; lustrous; superior; pure; perfect; pellucid; -- used of gems and also figuratively, because the most perfect jewels are found in the east.-the part of the horizon where the sun first appears in the morning; the east.-the countries of asia or the east.-a pearl of great luster.-to define the position of, in relation to the orient or east; hence, to ascertain the bearings of.-fig.: to correct or set right by recurring to first principles; to arrange in order; to orientate.