Definition

Noun: A discolored spot or stain, specifically one caused by the chemical reaction of rust (from iron) or by spilled ink.

Usage

This term is used to describe a permanent or stubborn stain on fabric, paper, or other surfaces, resulting from contact with iron oxide (rust) or ink. * The antique tablecloth was beautiful, but it had an iron mould in one corner from a forgotten metal button. * He tried to remove the iron mould from his shirt where the pen had leaked.

Advanced Usage

• The term is often associated with laundry and textile care, describing a specific type of stain that requires particular treatment.
• It can be used metaphorically to describe a persistent, ingrained flaw or blemish.
  • The scandal left an iron mould on the politician's reputation.

Variants and Related Words

• Iron mold: The primary spelling variant in American English.
• Rust stain: A more common, descriptive synonym for a stain caused specifically by iron oxidation.
• Ink stain: A more common, descriptive synonym for a stain caused by ink.

Synonyms

• Stain
• Blotch
• Blot
• Spot
• Discoloration

Idioms

• To remove/cure/get out the iron mould: To successfully eliminate a difficult stain. This can be used literally or figuratively.
  • No detergent seemed to get out the iron mould on the linen. (Literal)
  • Time did not cure the iron mould of that betrayal. (Figurative)

Noun

1. a spot caused the staining with rust or ink