0 If a flag, sail, or banner unfurls, it becomes open from a rolled position, and if you unfurl a flag, etc., you make it do this:
The demonstrators unfurled a large banner.
1 (of a flag, sail, etc.) to become open from a rolled position, or to cause something to become open from a rolled position
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.