[1] : The Collaborative International Dictionary of English v.0.48

plexus \plex"us\, n.; pl. l. plexus, e. plexuses. l., a
   twining, braid, fr. plectere, plexum, to twine, braid.
   1. anat. a network of vessels, nerves, or fibers.
      1913 webster

   2. math. the system of equations required for the complete
      expression of the relations which exist between a set of
      quantities. --brande  c.
      1913 webster

   3. a network; an intricate or interwoven combination of
      elements or parts in a coherent structure.

            in the perception of a tree the reference to an
            object is circumscribed and directed by a plexus of
            visual and other presentations.       --g. f. stout.
      webster 1913 suppl.
see also:
plexus plexuses 

[2] : WordNet (r) 2.0

plexus
     n : a network of intersecting blood vessels or intersecting
         nerves or intersecting lymph vessels syn: rete
see also:
rete 

[3] : Moby Thesaurus II by Grady Ward, 1.0

83 moby thesaurus words for "plexus":
   afferent neuron, arabesque, autonomic nervous system, axon,
   basketry, basketwork, brain, cancellation, central nervous system,
   cerebral cortex, craniosacral nervous system, cross-hatching,
   crossing-out, dendrite, effector organ, efferent neuron, filigree,
   fret, fretwork, ganglion, grate, grating, gray matter, grid,
   gridiron, grille, grillwork, hachure, hatching, interlacement,
   internuncial neuron, intertexture, intertwinement, lace, lacery,
   lacework, lacing, lattice, latticework, medullary sheath, mesh,
   meshes, meshwork, nerve, nerve trunk, nervous system, net, netting,
   network, neuron, peripheral nervous system, plexure, raddle,
   reticle, reticulation, reticule, reticulum, riddle, screen,
   screening, sensorium, sensory area, sensory cell, sieve,
   solar plexus, spinal cord, synapse, texture,
   thoracolumbar nervous system, tissue, tracery, trellis,
   trelliswork, wattle, weave, weaving, web, webbing, webwork, weft,
   white matter, wicker, wickerwork

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

plexus
     
        a modular world-wide web server written in perl by tony
        sanders .  comes with interfaces to allow
        many other information services to be served via the web.
     
        version 3.0m 1994-07-22 ftp://ftp.earth.com/plexus/.
     
        1994-07-22
     
     
see also:
world-wide web server perl lt;version 3.0m 1994-07-22gt; 

Plexus >> P Words
Plexus, definition of term: Plexus
plexus_pag1.html

Solar Plexus >> S Words
Solar Plexus, definition of term: Solar Plexus
solar+plexus_pag1.html

Sacral Plexus >> S Words
Sacral Plexus, definition of term: Sacral Plexus
sacral+plexus_pag1.html

Choroid Plexus >> C Words
Choroid Plexus, definition of term: Choroid Plexus
choroid+plexus_pag1.html