/ Dictionary / Index U unblock: Meaning and Definition of Find definitions for: un•block Pronunciation: (un-blok'), [key] — v.t. to remove a block or obstruction from: to unblock a channel; to unblock a person's credit. to play (a suit) so that the last card of the suit in one hand can provide access to the hand of the partnership having the longer holding in the suit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unblock (Thesaurus) unblinking unblooded Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language