backsword noun3 •A sword with one sharp edge, especially full length such, where shorter such are called broadsword and thereof. •(UK, old-fashioned) The game in which the stick is used.One afternoon, as the missionary and I were sitting outside our tents, my attention was attracted towards a group of sepahis engaged under a banyantree, playing the game of backsword […] — 1842 •(UK, old-fashioned) A stick with a basket handle, used in rustic amusements. formsbackswords