wool grease
Học thuậtThân thiện
Definition
Noun: 1. A natural, waxy substance secreted by sheep: Wool grease is a yellow, viscous substance produced by the sebaceous glands of sheep. It coats the wool fibers, providing natural waterproofing and protection for the sheep's skin. 2. A raw material for lanolin: When purified, wool grease becomes lanolin, which is used in various ointments, cosmetics, and leather treatments.
Usage and Examples
- Noun:
- The raw wool was heavy with natural wool grease.
- Wool grease must be cleaned from the fleece before the wool can be spun into yarn.
- The cosmetic company sources high-quality wool grease for its skincare products.
Advanced Usage
- Technical/Industrial Context: In textile manufacturing, "wool grease" refers specifically to the unrefined, crude substance removed during the scouring (washing) process of raw wool. The term distinguishes it from the purified product, lanolin.
- The scouring plant separates the wool grease from the wash water for later refinement.
Variants and Related Words
- Lanolin (noun): The purified, refined form of wool grease, used in pharmaceuticals and cosmetics.
- Lanolin is a common moisturizing ingredient in lip balms.
- Suint (noun): The water-soluble component of sheep's sweat, often found mixed with wool grease on raw wool.
- Yolk (noun): An older or regional term, particularly in the wool trade, referring to the natural grease and sweat in a sheep's fleece.
Synonyms
- Crude lanolin: Emphasizes its state as an unrefined raw material.
- Wool fat: A common alternative name, though "grease" is more accurate as it is a wax, not a true fat.
- Wool wax: A chemically precise synonym.
Related Phrases and Compounds
- Wool grease recovery: The industrial process of extracting and collecting grease from wool wash water.
- Degreased wool: Wool that has had the wool grease removed.
Noun
- a yellow viscous animal oil extracted from wool; a mixture of fatty acids and esters; used in some ointments and cosmetics