add. ·noun the slug produced by the machine, or matter composed in such lines.
2. linotype ·add. ·noun a kind of typesetting machine which produces castings, each of which corresponds to a line of separate types. by pressing upon keys like those of a typewriter the matrices for one line are properly arranged; the stereotype, or slug, is then cast and planed, and the matrices are returned to their proper places, the whole process being automatic.