1) Charger 2) French word used in English 3) Type of horse 
The destrier is the best-known war horse of the medieval era. It carried knights in battles, tournaments, and jousts. It was described by contemporary sources as the Great Horse, due to its significance. The word destrier is derived from the Vulgar Latin dextarius, meaning `right-sided` (the same root as dexterous and dexterity). This may refer .....
(from the article `military technology`) The destrier, or medieval war-horse, was central to the tactical viability of European feudalism. This animal was a product of two great migrations ...
[Ivanhoe] war horse
a war-horse; charger.