The small skull cap worn under the great helmet during the last part of the 13th century and into the early 14th century. By the 1330s the helmet had evolved completely into the bascinet , displacing the great helmet completely except for use in some jousts.
Cervèllaire – מילון אנגלי-אנגלי
The Knighthood, Chivalry & Tournaments Arms and Armour Glossary
The small skull cap worn under the great helmet during the last part of the 13th century and into the early 14th century. By the 1330s the helmet had evolved completely into the bascinet , displacing the great helmet completely except for use in some jousts.