armet - a medieval helmet with a visor and a neck guard

armor plate, armor plating, armour plate, plate armor, plate armour - specially hardened steel plate used to protect fortifications or vehicles from enemy fire

basinet - a medieval steel helmet

body armor, body armour, cataphract, coat of mail, suit of armor, suit of armour - armor that protects the wearer's whole body

casque - (15-16th century) any armor for the head; usually ornate without a visor

heaume - a large medieval helmet supported on the shoulders

cabasset, morion - a metal helmet worn by common soldiers in the 16th century

pickelhaube - a spiked helmet worn by German soldiers

sallade, sallet - a light medieval helmet with a slit for vision

visor, vizor - a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face

batting helmet - a helmet worn by the batter in baseball

beaver - a movable piece of armor on a medieval helmet used to protect the lower face

crash helmet - a padded helmet worn by people riding bicycles or motorcycles; protects the head in case of accidents

football helmet - a padded helmet with a face mask to protect the head of football players

safety hat, tin hat, hard hat - a lightweight protective helmet (plastic or metal) worn by construction workers

headdress, headgear - clothing for the head

headpiece - a protective helmet for the head

space helmet - a helmet worn by astronauts while in outer space