'Cribellum' definitions:

Definition of 'Cribellum'

From: GCIDE

Cribellum \Cri*bel"lum\ (kr?b?l"l?m), n. [L., a small sieve, dim. of cribrum sieve.] (Zool.) A peculiar perforated organ of certain spiders (Ciniflonid[ae]), used for spinning a special kind of silk. [1913 Webster]