escória — meaning in English

English meaning

cinder noun A small piece of partly burnt coal, wood, or other material left after combustion.
dregs noun The gritty sediment that settles at the bottom of a drink, especially unfiltered wine or coffee.
dross noun Rubbish or unwanted, impure material.
herd noun A large group of animals of one kind that live, feed, or move together.
scum noun A thin layer of dirt, foam, or other impurities that gathers on the surface of a liquid.
slag noun Waste material left over after smelting ore.
trash noun Discarded material; garbage or rubbish.

escória is used for these senses in English:

cinder Slag from a metal furnace.
dregs (figuratively, the dregs) The worst and lowest part of something.
dross Residue that forms as a scum on the surface of molten metal from oxidation.
herd (now, usually, pejorative) A crowd, a mass of people or things; a rabble. [from 15th c.]
trash (chiefly, North American, slang, derogatory) People of low social status or class. (See, for example, white trash or Eurotrash.)

noun The gritty sediment that settles at the bottom of a drink, especially unfiltered wine or coffee.
noun The most worthless or lowest part of something, especially people.