adjective

1. having nothing in it, as a space; devoid of contents; empty; void
2. not held, filled, or occupied, as a position or office
3. having no occupant a vacant seat
4. untenanted, as a room or house
5. not filled with activity or work; free; leisure vacant time
6. 1. having or showing emptiness of mind or lack of intelligence, interest, thought, etc.
   2. empty of thought: said of the mind
7. Law
   1. unoccupied or unused, as land
   2. having no claimant, as an estate or succession
   3. not yet granted, as public lands

Etymology: OFr < L vacans, prp. of vacare, to be empty