|Origin:||Latin, present participle of vacare 'to be empty, be free'|
a vacant seat, building, room or piece of land is empty and available for someone to use:
Only a few apartments were still vacant.
There was only a vacant lot (=empty unused area of land in a city) where her house used to be.
a job or position in an organization that is vacant is available for someone to start doing
fall vacant British English (=become vacant)
He was offered the position of headmaster when it fell vacant.
situations vacant British English (=the part of a newspaper where jobs are advertised)
an expression that shows that someone does not seem to be thinking about anything:
He gazed at me with vacant eyes.
Cindy was staring vacantly into space.