scumming

Mane (Îngilîzî)

1. The accumulation of sticky ink on a plate.
2. (in-plural) That which is scummed off; skimmings; scum.

Hevwate

dross

scum

skim

dross trap

drossing

slag-off

raking off the slag

Etîmolojî (Îngilîzî)

From scum + -ing.