Cribellum
Pronunciation : Cri*bel"lum (krbl"lm)
Part of Speech : n.
Etymology : [L., a small sieve, dim. of cribrum sieve.] (Zo?l.)
Definition : Defn: A peculiar perforated organ of certain spiders (Ciniflonid?), used for spinning a special kind of silk.
Source : Webster's Unabridged Dictionary, 1913