The Collaborative International Dictionary of English v.0.48:

Linotype \Lin"o*type\, n. [See Line; Type.] (Print.)
      (a) A kind of typesetting machine which produces castings,
          each of which corresponds to a line of separate types.
          By pressing the keys of a keyboard like one on a
          typewriter, the matrices for one line are properly
          arranged; the entire line, or stereotype, or slug, is
          then cast and planed, and the matrices are returned to
          their proper places, the whole process being
          automatic.
      (b) The slug produced by the machine, or matter composed
          in such lines. -- Lin"o*typ`ist, n.
          [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Linotype
    n 1: a typesetting machine operated from a keyboard that casts
         an entire line as a single slug of metal [syn: Linotype,
         Linotype machine]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "Linotype":
   Intertype, Monotype, cold-type typesetting, composing,
   composing stick, composition, computerized typesetting, dummy,
   furniture, galley chase, hot-metal typesetting, imposition,
   justification, layout, line of type, photocomposition,
   photosetting, phototypesetter, phototypesetting machine, quoin,
   setting, slug, typesetting, typesetting machine