Definition of unfurl verb from the Oxford Advanced American Dictionary

 

unfurl

 verb
verb
NAmE//ʌnˈfərl//
 
[intransitive, transitive]Verb Forms present simple I / you / we / they unfurl
 
he / she / it unfurls
 
past simple unfurled
 
-ing form unfurling
 
 
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when something that is curled or rolled tightly unfurls, or you unfurl it, it opens The leaves slowly unfurled. unfurl something to unfurl a flag/sail
See the Oxford Advanced Learner's Dictionary entry: unfurl