English edit

 
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Etymology edit

Trade name. The company states that it derives from swarf, an old Derbyshire engineering term for oil and grease, and a variation of eager, i.e. eager to clean.

Noun edit

Swarfega (uncountable)

  1. (UK) A heavy-duty gelatinous, thixotropic substance used to clean grease and oil, etc. from the skin.