banner:  Banner is of Germanic origin, but it reached English via Latin. Early forms which show its Germanic antecedents are Gothic bandwo ‘sign’ and the related Old Norse benda ‘give a sign’, but at some stage it was acquired by Latin, as bandum ‘standard’. This passed via Vulgar Latin *bandāria into various Romance languages, in some of which the influence of derivatives of Germanic *bann- (source of English ban) led to the elimination of the d. Hence Old French baniere and Anglo-Norman banere, source of English banner. => ban
c. 1200, from Old French baniere (Modern French bannière) "flag, banner, standard," from Late Latin bandum "standard," borrowed from a West Germanic cognate of Gothic bandwa "a sign" (see band (n.2)). Figurative use from early 14c. Of newspaper headlines, from 1913.