1. clear or remove an obstruction from

- the procedure unblocked his arteries

Definition categories: contact, unstuff

2. 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

Definition categories: competition, play

3. make (assets) available

Similar word(s): free, release, unfreeze

Definition categories: change, issue, supply

Sentences with unblock as a verb:

- We need a plumber to unblock the sink.