Topic summary
Joust

Extracted from the Wikipedia article Jousting.
Arena, procedure and armor
The medieval joust took place on an open field. Indeed, the term joust meant "a meeting" and referred to arranged combat in general, not just the jousting with lances. At some point in the 14th century, a cloth barrier was introduced as an option to separate the contestants. This barrier was presumably known as tilt in Middle English (a term with an original meaning of "a cloth covering"). It became a wooden barrier or fence in the 15th century, now known as "tilt barrier", and "tilt" came to be used as a term for the joust itself by c. 1510. The purpose of the tilt barrier was to prevent collisions and to keep the combatants at an optimal angle for breaking the lance. This greatly facilitated the control of the horse and allowed the rider to concentrate on aiming the lance. The introduction of the barrier seems to have originated in the south, as it only became a standard feature of jousting in Germany in the 16th century, and was there called the Italian or "welsch" mode. Dedicated tilt-yards with such barriers were built in England from the time of Henry VIII.