We found 4 dictionaries that define the word acorn cups:

General (4 matching dictionaries)

1. acorn cups: Merriam-Webster
2. acorn cups: Collins English Dictionary
3. acorn cups: Vocabulary.com
4. acorn cups: Wiktionary

(Note: See acorn_cup as well.)

Definitions from Wiktionary (acorn cup) ▸ noun:  The involucre or cup in which the acorn is fixed. ▸ Also see acorn_cup ▸ Words similar to acorn cups ▸ Usage examples for acorn cups ▸ Idioms related to acorn cups ▸ Wikipedia articles (New!) ▸ Words that often appear near acorn cups ▸ Rhymes of acorn cups ▸ Invented words related to acorn cups