“Stir on the fire till the sugar boils, then remove the scum from the surface.”
“They figured that if this man were truly religious, he certainly would not eat with such riff-raff, or associate with such scum.”
“I'm weak from hunger, but I'll teach you a lesson anyhow, you dirty scum!”
scumming
(video game) The strategy of collecting easy rewards in unchallenging areas, e.g. when a high-level character visits levels suitable for low-level characters in roguelike games.
(video game) The act of restoring a game's save file for the purpose of continuing play with a better outcome than was obtained the first time.
“Also, application of clear waterproofing materials may lock in moisture and crystalline growth, causing more scumming and possible spalling of brick.”
“Wandering up and down without certain seat, they lived by scumming those seas and shores as pirates.”
“A new mold cleaner for all closed-mold processes is said to combat mold scumming and cut through crusted-on styrene buildup with minimal scrubbing.”
scumming
(printing) The accumulation of sticky ink on a plate.
(plural) That which is scummed off; skimmings; scum.
“Also, application of clear waterproofing materials may lock in moisture and crystalline growth, causing more scumming and possible spalling of brick.”
“Wandering up and down without certain seat, they lived by scumming those seas and shores as pirates.”
“A new mold cleaner for all closed-mold processes is said to combat mold scumming and cut through crusted-on styrene buildup with minimal scrubbing.”