1. The cup of the acorn, husk of the filbert, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• cupal,
• cupel,
• cupple,
• couple,
• xupule,
• vupule,
• fupule,
• dupule,
• cypule,
• chpule,
• cjpule,
• cipule,
• c8pule,
• c7pule,
• cuoule,
• culule,
• cupulle,
• cupulee,
• cupull,
• cuppul

• cupel,
• cupful.

The adjective form of "cupule" is "cupulate".

The plural of the "cupule" can be the "cupules".

The singular of the "cupule" can be the "cupule".