Having no contents; empty; unfilled; void; devoid; destitute: as, a vacant space; a vacant room.Not occupied or filled with an incumbent or tenant; unoccupied.Not engaged or filled with business or care; unemployed; unoccupied; free; disengaged; idle: as, vacant hours.Characterized by or proceeding from idleness or absence of mental occupation.Free from thought; not given to thinking, study, reflection, or the like; thoughtless.Lacking, or appearing to lack, intelligence; stupid; inane.In law: Not filled; unoccupied: as, a vacant officeEmpty: as, a vacant house. In the law of fire-insurance a house may be unoccupied, and yet not be deemed vacant.Abandoned; having no heir: as, vacant effects or goods.