The phrase "rides out on rail" typically means someone being ejected from a group or organization in a humiliating way. There are several synonyms for this phrase, including "expelled," "banished," "ousted," "exiled," and "cast out." Other related terms include "removed," "ejected," "discharged," "dismissed," and "booted out." These words all imply a forceful and often public departure, usually due to some sort of misconduct or perceived misconduct on the part of the person being removed. Overall, the concept of being "ridden out on a rail" is a dramatic and memorable way of describing a person's fall from grace or loss of status within a group.