acinus acinus /ˈæsɪnəs/

noun

1. One of the small sacs or saclike dilations in a compound gland  ( acinus )
   one of the small sacs or saclike dilations in a compound gland
   
2. One of the small drupes making up an aggregate or multiple fruit like a blackberry  ( acinus )
   one of the small drupes making up an aggregate or multiple fruit like a blackberry