iron mold

American  

noun

1. a stain on cloth or the like made by rusty iron or by ink pigmented with an iron derivative.

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Etymology

Origin of iron mold

First recorded in 1595–1605

Example Sentences

“Being able to blow glass into an iron mold and have pieces release cleanly without chipping or breaking is an art.”

From Washington Times • Jul. 18, 2014

Modest, and mighty, and tender,   Man of an iron mold, Learned or unlearned, our defender,   American-souled!

From Rose and Roof-Tree — Poems by Lathrop, George Parsons

If Crisco sizzles considerably, and batter case spreads out and drops from the iron, mold is too hot.

From The Story of Crisco by Neil, Marion Harris

To a man of Bismarck’s iron mold, the exercise of power is the breath of life; this made it a tragedy for the aged Bismarck to withdraw.

From Blood and Iron Origin of German Empire As Revealed by Character of Its Founder, Bismarck by Greusel, John Hubert

A piece of cotton thread must be heated in a furnace in an iron mold, which would prevent the thread from burning by keeping out the air.

From The Story of Great Inventions by Burns, Elmer Ellsworth