noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any small structure shaped like a cup, such as at the base of an acorn, or the sucker on the feet of some flies.

   "Then they extract a three-angled beechnut from its cupule, weigh it, and push it into the loam."

2. 2
   a sucker on the feet of certain flies wordnet
3. 3
   cup-shaped structure of hardened bracts at the base of an acorn wordnet

Synonyms

All synonyms

acorn cup

Example

More examples

"Then they extract a three-angled beechnut from its cupule, weigh it, and push it into the loam."

Etymology

From cup + -ule.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.