noun. An ancient method of writing in which the lines are inscribed alternately from right to left and from left to right.

noun. A method of writing shown in early Greek inscriptions, in which the lines run alternately from right to left and from left to right, as the furrows made in plowing a field, the plow passing alternately backward and forward.

noun. An ancient mode of writing, in alternate directions, one line from left to right, and the next from right to left (as fields are plowed), as in early Greek and Hittite.

adverb. of writing, in a fashion such that the reading direction changes from right-to-left to left-to-right every line.

adjective. written from right-to-left and left-to-right on alternate lines

adjective. changing direction, going back and forth

noun. an ancient writing system: having alternate lines written in opposite directions; literally `as the ox ploughs'