A wooden strip that was fitted front-to-back down the middle of the underside of all cars in the mid-1990s to check that cars were not being run too close to the track surface, something that was indicated if the wood was worn away
1 A broad board, usually more than 1 inch thick, laid with its wide dimension horizontal and used as a bearing surface 2 A piece of lumber 2 inches or more but less than 4 inches thick and 8 inches or more wide
an endorsed policy in the platform of a political party cook and serve on a plank; "Planked vegetable"; "Planked shad" cover with planks; "The streets were planked" set (something or oneself) down with or as if with a noise; "He planked the money on the table"; "He planked himself into the sofa
The main plank of a particular group or political party is the main principle on which it bases its policy, or its main aim. Encouraging people to shop locally is a central plank of his environment policy