Wiktionary
a. (alternative spelling of down-line English) n. (alternative spelling of down line English)
Usage examples of "downline".
And, then, the Hour of the Dead begins, at either end of the Grand Trunk, as the upline and downline shutters clear their messages and stop moving, one after the other.
Besides which they might have taken the track up further downline too.
Molitor Station had seemed a good base because it was located where the A, C, and E lines split from Routes 1, 2, and 3 and was not far downline from the sub-surface exit, thus giving easy access to all four potential war zones.
Everything looked functional enough, and everything that could be done by the crews of downlined ships put to busywork to keep them from going slack had been done, too.