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 remove a cover from.
To remove one's hat or cap as a mark of respect.
To reveal the identity of.
To expose the genitalia.
To show openly; to disclose; to reveal.
To expose (lines of formation of troops) successively by the wheeling to right or left of the lines in front.