cribellum (kr??b?l?m) n, pl -la (-l?) (Zoology) a sievelike spinning organ in certain spiders that occurs between the spinnerets[C19: New Latin, from Late Latin cribellum, diminutive of Latin cribrum a sieve]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014