Arachnidium

1 definition found

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

  Arachnidium \Ar`ach*nid"i*um\, n. [NL. See {Arachnida}.] (Zool.)
     The glandular organ in which the material for the web of
     spiders is secreted.
     [1913 Webster]