What does the word plank mean?

Usage examples for plank

  1. It threatened to fall into the river, the girl was not on board yet, and Blake leaped upon the plank. – Blake's Burden by Harold Bindloss
  2. " It's like walking a tight- rope," said Marjorie, as she picked her way carefully along what she hoped was a sound plank. – Marjorie's Vacation by Carolyn Wells
  3. They came sliding on a plank down those stairs. – The Matador of the Five Towns and Other Stories by Arnold Bennett