acinus > define

noun

• One of the small drupes making up an aggregate or multiple fruit like a blackberry.
• One of the small sacs or saclike dilations in a compound gland. .

• (n.) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc.
• (n.) A grapestone.
• (n.) One of the granular masses which constitute a racemose or compound gland, as the pancreas; also, one of the saccular recesses in the lobules of a racemose gland.