The Collaborative International Dictionary of English v.0.48:
Unfurl \Un*furl"\, v. t. & i. [1st pref. un- + furl.] To loose from a furled state; to unfold; to expand; to open or spread; as, to unfurl sails; to unfurl a flag. [1913 Webster]WordNet (r) 3.0 (2006):
unfurl v 1: unroll, unfold, or spread out or be unrolled, unfolded, or spread out from a furled state; "unfurl a banner" [syn: unfurl, unroll] [ant: roll up, wrap up]