plank

noun

• 1a long, thin, flat piece of timber, used especially in building and flooring.

• 2a fundamental point of a political or other programme:the central plank of the bill is the curb on industrial polluters

• 3a physical exercise designed to strengthen the abdominal muscles, in which one performs a press-up and holds the raised position for a set period of time: the session usually include a lot of core work, lunges, planks, and squats

• 4British informal a stupid person.

verb

• 1make, provide, or cover with planks: (as adjective planked)the planked wooden steps

• 2 informal put or set (something) down forcefully or abruptly:Ned planked the glasses in front of him

• 3Scottish hide (something):he had planked £1,000 under the mattress

  [alteration of the verb plant]