What does the word joist mean?

Usage examples for joist

  1. The third night after was settled upon as the one to leave, as it promised to be dark and rainy, but just before night, the Sergeant took it into his head to try the floor, and procuring a long pole he went into the room below and punched at the loose boards, which immediately yielded, and then he brought in another carpenter, and personally superintended stopping up the aperture, which was done by spiking pieces of joist, against the floor joists, completely closing it up. – In and Out of Rebel Prisons by Lieut. A. [Alonzo] Cooper
  2. Joist Hite had four famous grandsons born at this Bowman home. – Legends of the Skyline Drive and the Great Valley of Virginia by Carrie Hunter Willis Etta Belle Walker
  3. At night, after the station was closed, he sought his own dwelling, climbed over the joist and rollers, entered, retired to his room, and went to bed. – The Depot Master by Joseph C. Lincoln