cribellum
Concise Oxford English Dictionary © 2008 Oxford University Press:
cribellum /krɪˈbɛləm/
▶noun (pl. cribella /-lə/) Zoology (in some spiders) an additional spinning organ with numerous fine pores, situated in front of the spinnerets.
– derivatives
cribellate adjective.
cribellate adjective.
– origin C19: from late L., dimin. of cribrum ‘sieve’.
'cribellum' also found in these Oxford entries:

