Synonyms of 'ensign'
any flag or bannera merchant ship flying the blue ensign of a fleet auxiliary
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in the sense of banner
a long strip of material displaying a slogan, advertisement, etc.
A big banner was draped across one of the streets.
in the sense of pennant
a long narrow flag, esp. one used by ships as identification or for signalling
The second car was flying the Ghanaian pennant.
Thesaurus for ensign from the Collins English Thesaurus