up line noun 2up-line adjective 1forms 2 noun2 •A railway line on which trains travel towards a major terminus.The down line was cleared about midnight, or nine hours after the accident, but the up line was not in a state to admit of the traffic being resumed until one o'clock on the next day. — 1857 •[before a noun] A member of a multi-level marketing scheme who has recruited others (their down line) and receives a portion of their earnings.Many uplines convince their distributors to develop an "us vs. them" attitude that is completely unfounded in reality. — 1998 up-line adjective1 •Describing a higher level in a hierarchical management structure formsup lines · up-lines
