Noun

1. A helmet that entirely covers the head, including the face.

   Quotations

   • 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.