the world > space > relative position > arrangement or fact of being arranged > arrangement in (a) row(s) or line(s > [adjective] > one behind the other > (so many) one behind the other (2)
Standing one behind the other; = deep, adj. 2b. Obsolete.
Having a (specified) dimension inward from the surface, outer part, or front; spec. (with simple numeral prefixed) of persons, chiefly soldiers…