We found 15 dictionaries that define the word pen up:

General (10 matching dictionaries)

1. pen up: Merriam-Webster
2. pen up: Vocabulary.com
3. pen up: Wiktionary
4. pen up: Dictionary.com
5. pen up: Rhymezone
6. pen up: FreeDictionary.org
7. pen up: Mnemonic Dictionary
8. pen up: TheFreeDictionary.com

Business (2 matching dictionaries)

9. pen up: Legal dictionary
10. pen up: Financial dictionary

Computing (1 matching dictionary)

11. pen up: Encyclopedia

Medicine (1 matching dictionary)

12. pen up: Medical dictionary

Miscellaneous (1 matching dictionary)

13. pen up: Idioms

Definitions from Wiktionary (pen up) ▸ verb:  To enclose (animals) in a pen. ▸ verb:  To enclose as if in a pen. Similar: fold, pen in, impen, close in, fence in, include, encase, encage, fence off, enclose, more... Opposite: release, free, let out, unleash Adjectives: hutched, run, stabled, stray, caged, cagelike, lew, bedfast, close, hold, seg ▸ Words similar to pen up ▸ Usage examples for pen up ▸ Idioms related to pen up ▸ Wikipedia articles (New!) ▸ Words that often appear near pen up ▸ Rhymes of pen up ▸ Invented words related to pen up