From Longman Dictionary of Contemporary Englishunfurlun‧furl /ʌnˈfɜːl $ -ɜːrl/ verb [intransitive, transitive] FOLD#if a flag, sail etc unfurls, or if someone unfurls it, it unrolls and opens→ See Verb table
Examples from the Corpus
unfurl• A single protester attempted to unfurl a banner in the square on June 3, but was quickly arrested by police.• A Campaign for Nuclear Disarmament banner was unfurled and carried round the war memorial before one of those carrying it was arrested.• As I was shoved down, I saw my half of the banner unfurled and prayed that Paul would do the same.• On Fat Tuesday, Meredith watched the banners being unfurled in the ballroom with a stab of pride in her heart.• Only then could we ourselves drop to the ground and, using a pull-cord on each side, completely unfurl it.• My damp wings were unfurling, slowly breaking from their mucus shell, soggy and crumpled.• In the spring these plants would unfurl tiny pink bell-like flowers that attract bees.• The buzzing that I felt with her unfurled within me, gaining strength until I could not contain it. 