make (assets) available; "release the holdings in the dictator's bank account"
play the cards of (a suit) so that the last trick on which a hand can follow suit will be taken by a higher card in the hand of a partner who has the remaining cards of a combined holding
clear or remove an obstruction from; "the procedure unblocked his arteries"
protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior