To terminate; to call the end of.
To terminate a computer program.
To make trades offsetting an existing position, leaving the trader with a neutral position.
Of a wave, to break all at once, instead of progressively along its length.
To exclude by blocking all opportunities to enter or join.
To seal off.
Synonym of close (“to make a sale”)
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.