Definition of ventail in US English:



  • 1The lower movable front of a medieval helmet.

    • ‘In one of the World Wars, some tank drivers wore mail ventails on their helmets for the same reason.’
    • ‘Covering the mouth seems to have come in when the integral ventail was developed.’
    • ‘When not at combat readiness, the mailed knight would unfasten his ventail, throw back his coif, and turn back his mittens.’
    1. 1.1 The whole movable front of a medieval helmet, including the visor.
      • ‘He maketh them take off their helmets and lower their ventails, and then kiss one another, afterward he leadeth them to his hermitage.’
      • ‘The ventail is lined with deer skin, and fastens to the brow with a strap and a period-appropriate buckle.’