bramble: [OE] Bramble has several cognates in other Germanic languages, but as with many plant-names it does not always refer to the same plant. Old High German brāmma, for instance, is a ‘wild rose’; Old Saxon hiopbrāmio is a ‘hawthorn bush’; and then there is English broom. All come from a prehistoric Germanic *brāemoz ‘thorny bush’. In the case of bramble, Old English originally had brēmel, but the medial -b- had developed before the end of the Old English period. The bird-name brambling [16] is probably derived from it. => broom
Old English bræmbel "rough, prickly shrub" (especially the blackberry bush), with euphonic -b-, from earlier bræmel, from Proto-Germanic *bræmaz (see broom).