noun

figurative
  • The action or process of waving a banner or banners; (figurative) zealous promotion of or support for an ideology, campaign, or cause.

adjective

figurative
  • That waves a banner or banners; (figurative) that supports a campaign or cause; politically active, zealous.

Origin

Mid 19th century; earliest use found in George A. Sala (1828–1895), journalist.