单词 plough-beam 释义 plough-beam, plow-The central longitudinal beam or bar of timber or iron in a plough, to which the other principal parts are attached.14..Voc. in Wr.-Wlcker 569/21 Burris, the plowebeme.14..Nom. ibid. 724/27 Hec buris, a plughbeme.1...