1.
empty seat; vacant seat; unoccupied seat
A seat that is not occupied, available for use.
2.
vacancy; open position
Figuratively, an unfilled position or opening, such as in an organization or committee.
Related Words
Antonym:
満席 (fully booked)
Related:
満員 (full capacity (general))
Related:
空き (vacancy, opening)
Related:
欠員 (vacancy)
Related:
空く (vacancy, opening)