|Origin:||expirer, from Latin exspirare, from spirare 'to breathe'|
if an official document expires, it can no longer be legally used [= run out]:
My passport expires next week.
players whose contracts expire this summer
My driving licence expires in March.
The lease on the flat expired on June 14th.
if a period of time when someone has a particular position of authority expires, it ends:
The chairman's term of office has already expired.
if someone expires, they die:
Ophelia expires in Act IV of Hamlet.