boustrŏphēdŏn, adv., = βουστροφηδόν,
from right to left and back again alternately , forwards and backwards , an ancient way of writing, Mar. Vict. 1, 14, 6 Gaisf. (al. boustrophen, id. p. 2499 P.).
·noun An ancient mode of writing, in alternate directions, one line from left to right, and the next...
Webster's Dictionary of the English Language