- A part of a helmet, arranged so as to lift or open, and so show the face. The openings for seeing and breathing are generally in it.
- 1786, A close helmet entirely covers the head, face, and neck, having on the front perforations for the admission of air, and slits through which the wearer may see objects around him, this part which is stiled the visor lifts up by means of a pivot over each ear. — Francis Grose, A Treatise on Ancient Armour and Weapons, page 7.
- A mask used to disfigure or disguise.
- 1608, No visor does become black villainy So well as soft and tender flattery. — William Shakspeare, Pericles, Prince of Tyre, Act IV, Scene IV, line 44.
- The fore piece of a cap, projecting over, and protecting the eyes.