Definition: a greasy, fatty substance, insoluble in water, that is extracted from wool-bearing animals used to coat the skin of swimmers, especially to friction points (e.g., underarms, inside thighs, chin and neck) in order to prevent chafing or help reduce the impact of cold water. (noun)
Also Known As: grease, Vaseline, white stuff, Adeps Lanae, wool wax, wool fat, anhydrous wool fat, wool grease
Examples:
The coach spread a thin layer of lanolin under the swimmer's shoulders.
