globalneutraltechnicalcommercial
- A trade name for a widely sold multipurpose penetrating oil and water-displacing spray used to lubricate, protect metal from corrosion, and loosen rusted parts.
USUKAustraliainformalcolloquial
- A can or application of the product WD-40; metonymically, any similar lubricant or penetrating oil.
USUKinformaljocularslang
- An informal sobriquet, callsign, or nickname applied to a person, often playfully or as a code name; used without literal reference to the product.