Definition

Noun: A medicinal preparation, typically a paste or poultice, containing powdered black mustard seeds. It is applied to the skin to act as a counterirritant, causing localized redness (rubefaction) and warmth to relieve pain or congestion in deeper muscles or organs.

Usage

A mustard plaster is a historical home remedy used to treat chest congestion, muscle aches, and rheumatism. It is applied directly to the skin for a short, controlled period to stimulate blood flow. Prolonged application can cause burns or blistering.

Examples

• Noun:
  • The old-fashioned doctor recommended a mustard plaster for her persistent chest cold.
  • Applying a mustard plaster to his sore back provided temporary relief from the muscle pain.

Advanced Usage

• Historical/Figurative Use: The term can be used figuratively to describe something harsh or stimulating that is meant to provoke a reaction.
  • His criticism was a mustard plaster on the complacency of the organization.

Variants and Related Words

• Sinapism: (noun) A medical synonym for a mustard plaster.
• Poultice: (noun) A general term for a soft, moist mass of material applied to the body to relieve soreness or inflammation. A mustard plaster is a specific type of poultice.
• Counterirritant: (noun) A substance that creates superficial irritation to relieve deeper inflammation or pain.

Synonyms

• Sinapism
• Mustard poultice

Notes

This term refers to a specific, singular compound noun. It is not typically used in phrasal verb or idiomatic constructions outside of the figurative advanced usage noted.

Noun

1. a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient