One of the principal horizontal timbers of a building; one of the transverse members of a ship's frame on which the decks are laid β supported at the sides by knees in wooden ships and by stringers in steel ones.
A cylinder of wood, making part of a loom, on which weavers wind the warp before weaving and the cylinder on which the cloth is rolled, as it is woven.
In steam engines, a heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft.