noun

1. a long, broad, thick board
2. planking (sense )
3. something that supports or sustains
4. ☆ any of the articles or principles making up the platform or stated program of a political party

Etymology: ME planke < NormFr < OFr planche < LL planca, a board, plank < VL palanca < Gr phalangai < phalanx (gen. phalangos): see phalanx

transitive verb

1. to cover, lay, or furnish with planks
2. ☆ to broil and serve (steak, fish, etc.) on a board or wooden platter
3. Informal
   1. to lay or set (down) with force or emphasis
   2. ☆ to pay: usually with down or out