The story
* (motorsport): Genericization of a trademark, deriving from an initialism of very high traction. * (taxation): Initialism of vacation home tax.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A substance laid down atop the surface of a drag strip to increase the surface grip available to a dragster's tires, to enable quicker acceleration, faster speed, and lower strip times. Full definition →
* (motorsport): Genericization of a trademark, deriving from an initialism of very high traction. * (taxation): Initialism of vacation home tax.
Etymology from Wiktionary, CC BY-SA 4.0.