The Collaborative International Dictionary of English v.0.48:

Extrude \Ex*trude"\, v. t. [imp. & p. p. Extruded; p. pr. &
   vb. n. Extruding.] [L. extrudere, extrusum; ex out +
   trudere to thrust, akin to E. threat. See Threat.]
   1. To thrust out; to force, press, or push out; to expel; to
      drive off or away. "Parentheses thrown into notes or
      extruded to the margin." --Coleridge.
      [1913 Webster]

   2. (Metallurgy) To shape or form by forcing metal heated to a
      semi-plastic condition through dies by the use of
      hydraulic power; as, extruded metal, extruded rods,
      extruded shapes.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

extrude
    v 1: form or shape by forcing through an opening; "extrude
         steel" [syn: extrude, squeeze out]

Moby Thesaurus II by Grady Ward, 1.0:

106 Moby Thesaurus words for "extrude":
   arise, assemble, bail out, boot out, bounce, break cover,
   break forth, bristle up, build, burst forth, cast, cast out, chase,
   chuck, chuck out, cock up, come, come forth, come out, compose,
   compound, concoct, construct, create, debouch, defenestrate,
   detrude, devise, discard, discharge, disembogue, dismiss, effuse,
   eject, elaborate, elect, emanate, emerge, erect, erupt, evict,
   evolve, exclude, expel, fabricate, fashion, form, formulate, frame,
   fudge together, get up, give the hook, heave out, indite, issue,
   issue forth, jettison, jump out, junk, jut out, kick downstairs,
   kick out, make, make up, manufacture, mature, mold, obtrude, oust,
   out, patch together, piece together, poke out, prefabricate,
   prepare, produce, project, protrude, protuberate, put out,
   put together, put up, raise, rear, reject, remove, run up, sally,
   sally forth, set up, shape, shoot out, shoot up, stand out,
   start up, stick out, stick up, surface, throw away, throw out,
   throw overboard, thrust out, toss out, turn out, whomp up, write