Small seeds of grapes

• Grape seeds, e.g
• Grape pits e.g
• Blackberry drupelets, e.g
• Small drupes
• Gland parts
• Raspberry drupelets, e.g

WordNet Word definitions in WordNet
n. 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 [also: acini (pl)]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Acinus \Ac"i*nus\ ([a^]s"[i^]*n[u^]s), n.; pl. Acini . [L., grape, grapestone.] (Bot.) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc. A grapestone. (Anat.) One of the granular masses which constitute ...