DROSS
🗑️🔥🧹

Example

Most of the comments were dross, not worth rereading.

Definition

The scum or impurities that form on molten metal

  • Waste material produced in smelting or metalworking

Worthless or inferior matter; trash

  • Material of little value compared with the best part

To remove impurities or scum from molten metal

  • To clean metal by skimming off dross