The Probert Encyclopaedia of Heraldry

OPINICUS

In heraldry, an opinicus is an imaginary animal borne as a charge, having wings, an eagle's head, and a short tail. It is sometimes represented without wings.
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OR

In heraldry, or is the yellow or gold colour, represented in drawing or engraving by small dots.
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ORDINARY

In heraldry an ordinary is a charge or bearing of simple form, one of nine or ten which are in constant use. The bend, chevron, chief, cross, fesse, pale, and saltire are uniformly admitted as ordinaries. Some authorities also include the bar, bend sinister, pile, and others.
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ORIFLAMME

The oriflamme was the ancient royal banner of France; originally the banner of the abbey of St Denis, near Paris, which received many important grants from the early French kings. Its colour was purple with a tinge of azure and gold. It became the banner of the monarchy in the reign of Philip I. The oriflamme borne at Agincourt was, according to Sir Nicolas, a rectangular red flag, split into five points. It sometimes bore upon it a salrire wavy, from the centre of which golden rays diverged.
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ORLE

In heraldry, an orle (crest-wreath) is a bearing, in the form of a fillet, round the shield, within, but at some distance from, the border. The term is also applied to the wreath, or chaplet, surmounting or encircling the helmet of a knight and bearing the crest. During the Middle Ages the orle was formed of two rolls of silk of the principal metal and colour in the arms, twisted together so as to show the metal and colour alternately. The orle first appears in English heraldry around 1375.
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OVERT

In heraldry, overt describes the wings of a bird, &c. when spread open on either side of the head, as if taking flight.
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