expireex·pire /ɪkˈspaɪə-ˈspaɪr/ verb [intransitiveI]1LAWif an official document such as a contract, agreement, or licence expires, the period of time during which it can be used endsIf your Program disk proves defective after the warranty expires, you will end up paying a fee of £200 to replace it.
The existing lease expires at the end of this year.
2if a period of time expires, it comes to an endThe Panel will not take any action until the appeal period of two business days has expired.
If you cannot complete the work on time, then you should contact the client before the deadline expires.
3FINANCE if an OPTION (=the right to buy a particular amount of shares, currency etc in the future) expires, it can no longer be EXERCISED (=it is no longer possible to buy the shares, currency etc that it relates to)When the October options expire, the clearing house for the market will create a new series of options for July expiry.