With plural agreement and chiefly with the. Those who are kept in a position of subjection and hardship; oppressed people collectively.
That has been pressed down, depressed (literal and figurative); (in later use) especially kept in a position of subjection and hardship; oppressed.
Late Middle English; earliest use found in The Book of the Foundation of St. Bartholomew's Church in London. From down- + pressed, past participle of press.