To remove or clear a block or obstruction from.
In whist, to throw away a high card so as not to interrupt one's partner's long suit.
To free or make available.
To enable communication again, via telephone, instant messaging, etc., with (somebody previously blocked).
The removal of a block or blockage.
To have a court judgement set aside; to annul.
To leave an area, usually as a result of orders from public authorities in the event of a riot or natural disaster.
To leave an office or position.
To move out of a dwelling, either by choice or by eviction.