ORLET, or ORLO, in architecture, a fillet under the ovolo or quarter round of a capital. When it is at the top or bottom of the shaft, it is called cinerure. Palladio uses the word orlo, for the plinth of the bases of the columns.

Orle, in heraldry, an ordinary, in form of a fillet, drawn round the shield, near the edge or extremity thereof, leaving the field vacant in the middle. Its breadth is but half that of the trellis or bordure, which contains a sixth part of the shield; and the orle, only a twelfth: besides that the orle is its own breadth distant from the edge of the shield, whereas the bordure comes to the edge itself. The form of the orle is the same with that of the shield; whence it resembles an escutcheon. See Plate CXXXIV. fig. 6, which represents an orle argent in a field gules.