1. (Science: mechanics) a pin, or block, of wood or metal, fitting into holes in the abutting portions of two pieces, and being partly in one piece and partly in the other, to keep them in their proper relative position.
2. A piece of wood driven into a wall, so that other pieces may be nailed to it. Dowel joint, a joint secured by a dowel or dowels. Dowel pin, a dowel. See dowel.
Origin: cf. G. Dobel peg, f. Douelle state of a cask, surface of an arch, douille socket, little pipe, cartridge.