banner/ˋbænɚ; ˈbænə/n [C] 1 a long piece of cloth with writing on it〔通常用两根竿子撑开的〕横幅标语: The crowds were cheering and waving banners . 人群欢呼吶喊﹐挥动着横幅。2 under the banner of sth a) doing something because of a principle or belief 以…为名义﹐打着…的旗号: an election fought under the banner of social justice 打着维护社会正义的旗号举行的一场选举b) doing something as part of a particular organization 作为〔某组织的〕一部分﹐以…的身份: a force operating under the NATO banner 打着北约旗帜行动的一支部队