Definition of cavalier

• n. - A military man serving on horseback; a knight.
• n. - A gay, sprightly, military man; hence, a gallant.
• n. - One of the court party in the time of king Charles I. as contrasted with a Roundhead or an adherent of Parliament.
• n. - A work of more than ordinary height, rising from the level ground of a bastion, etc., and overlooking surrounding parts.
• a. - Gay; easy; offhand; frank.
• a. - High-spirited.
• a. - Supercilious; haughty; disdainful; curt; brusque.
• a. - Of or pertaining to the party of King Charles I.