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English definition of “plank”

plank

noun [C] uk   /plæŋk/ us  

plank noun [C] (FLAT PIECE)

a long, narrow, flat piece of wood or similar material, of the type used for making floors: oak/concrete planks a plank of wood We used a plank to cross the ditch.

plank noun [C] (PRINCIPLE)

literary an important principle on which the activities of a group, especially a political group, are based: Educational reform was one of the main planks of their election campaign. The party's policy is based on five central planks.
(Definition of plank from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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