/
rɪˈtɪkjʊləm/
n.
 (pl. reticula  
/-lə/
)
  - a fine network or net-like structure.
 - Zoology  the second stomach of a ruminant, having a honeycomb-like structure, receiving food from the rumen and passing it to the omasum.
 
Derivative
Etymology
C17 (earlier (C16) as reticular): from L., dimin. of rete ‘net’.