1. 告终;期满;截止
The expiration of a fixed period of time is its ending.

1. the act of expelling air from the lungs

Synonym: exhalationbreathing out

2. euphemistic expressions for death

e.g. thousands mourned his passing

Synonym: passinglossdepartureexitgoingrelease

3. a coming to an end of a contract period

e.g. the expiry of his driver's license

Synonym: terminationexpiry