red stuff

American  

noun

1. a compound of oil and sesquioxide of iron used for polishing brass, steel, silver, etc.; crocus or rouge.

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Etymology

Origin of red stuff

First recorded in 1840–50

Example Sentences

The spider has developed a special sense that allows it to detect blood and will choose small, blood-filled mosquitoes over larger ones that don't contain the red stuff.

From Salon • Oct. 31, 2024

You’d be well-served to go far beyond the chunky red stuff you buy in a jar at the store.

From Washington Post • Sep. 15, 2020

“We don’t know what this red stuff is,” says John Spencer, a planetary scientist at SwRI and deputy project scientist on New Horizons.

From Science Magazine • Dec. 27, 2018

Ugh, what’s that gooey red stuff dripping out of Santa’s bag?

From New York Times • Dec. 21, 2018

Even though Catherine tried to clean it up, you just can’t get red stuff out of a white shirt.

From "Out of My Mind" by Sharon M. Draper