Fruit on a strawberry

• Berry nub
• Fruit of the buttercup
• Part of a buttercup
• Hard area of strawberry
• Outer part of a strawberry
• Small, one-seeded fruit, botanically

WordNet Word definitions in WordNet
n. small dry indehiscent fruit with the seed distinct from the fruit wall

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Achene \A*chene"\, Achenium \A*che"ni*um\n. [Gr. 'a priv. + ? to gape.] (Bot.) A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists. [Written also akene and ach[ae]nium .]

Wiktionary Word definitions in Wiktionary
n. (context botany English) A small, dry, indehiscent fruit, containing a single seed, as in the buttercup.