An Etymological Dictionary of the German Language/Bort
Bort, n., ‘board,’ from the equiv. MidHG. bort; comp. Goth. fôtubaúrd, ‘footstool,’ OSax. and Du. bord, AS. bord, ‘board, shield, table,’ E. board (see Bord). The OTeut. word bord meant the same as Brett, to which it is related by gradation; the apparent metathesis of re to or is OTeut., as in forschen in relation to fragen; Brett, Bort may be represented in Ind. as brádhas, bṛdhas. See Brett.