String′er.
1. (Carpentry.) A horizontal timber connecting posts in a frame; as, — A tie-timber of a truss bridge. A horizontal tie in a floor framing.
2. (Railroad-engineering.) A longitudinal balk or timber on which a railway rail is fastened, and which rests on transverse sleepers.
3. (Shipwrighting.) An inside strake of plank or of plates, secured to the ribs and supporting the ends of the beams. A shelf-piece.