"Dragon knights who specialize in jumping and lance attacks."
The Dragoon is a Job in Final Fantasy V obtained after the Earth Crystal shatters. The Dragoon is a heavy tank job, as it has access to heavy armor as well as the Jump command, which keeps the Dragoon out of harm's way for a bit. Dragoons are one of three classes (originally two in the non-GBA versions) to be able to equip spears, the others being Freelancer and Gladiator.
The Dragoon costume is just like the Knight in that they both wear heavy armor. The main difference is the dragon-shaped helmet and the dragon-like wings on their backs; Bartz even looks like Kain Highwind from Final Fantasy IV.
Equipment - Knives, Spears, Shields, Heavy Helmets, Clothes, Heavy Armor, Gauntlets
Jump has the character leap up the first turn, then come falling down on the enemy the next. If the character is equipped with a spear, Twin Lance, Man-Eater, Staff of Light, or Judgment Staff they will do twice the damage. Jump ignores Row, will not activate any special abilities or effects of any equipped weapons, and critical hits (including those that consume MP to force a critical) will act as normal. Spellblade effects will still apply to Jump attacks, and rods may still miss even with Jump. Weapons that deal no damage and are based on Magic, such as Harps, the Healing Staff, and the Wonder Wand, will always miss. Jump is unblockable.
Of note, Equip Lances gives characters the Dragoon's base Strength unless otherwise at a higher value.
Upon mastery, Freelancers and Mimes gain the Dragoon's base Strength, Agility and Stamina unless they already have a higher base from another mastered job.
In the library of Castle Surgate, a man once wrote that the secret to his power was that he was a mage that knew how to Lance. This is because Lance takes HP and MP from an enemy, refilling the mage's MP stock and healing him.