We found 24 dictionaries that define the word pens:

General (15 matching dictionaries)

1. pens: Merriam-Webster
2. pens, pens: Oxford Learner's Dictionaries
3. pens: Collins English Dictionary
4. pens: Vocabulary.com
5. Pen's, Pens, pen's, pens, pens, pens: Wordnik
6. pens: Cambridge Advanced Learner's Dictionary
7. pens: Wiktionary
8. PENS: Dictionary.com
9. pens: Cambridge Essential American English Dictionary
10. PENS (software), Pens: Wikipedia, the Free Encyclopedia
11. Pens: Online Plain Text English Dictionary
12. pens: Webster's Revised Unabridged, 1913 Edition
13. Pens: AllWords.com Multi-Lingual Dictionary
14. pens: FreeDictionary.org
15. Pens: TheFreeDictionary.com

Business (2 matching dictionaries)

16. pens: Legal dictionary
17. pens: Financial dictionary

Computing (1 matching dictionary)

18. pens: Encyclopedia

Medicine (2 matching dictionaries)

19. pens: Merriam-Webster Medical Dictionary
20. PENS: Medical dictionary

Miscellaneous (3 matching dictionaries)

21. PENS: Acronym Finder
22. AbbreviationZ (No longer online)
23. pens: Idioms

Slang (1 matching dictionary)

24. pens: Urban Dictionary

(Note: See pen as well.)

Definitions from Wikipedia (Pens) ▸ noun:  common writing instruments. Types: ballpoint, rollerball, felt tip, gel, fountain, marker, highlighter, colored pencils, more... Phrases: fountain pens, ballpoint pens, quill pens, light pens, cattle pens, more... Adjectives: ballpoint, many, colored, point, different, several, small, tipped, light, ablest, coloured ▸ Words similar to pens ▸ Usage examples for pens ▸ Idioms related to pens ▸ Wikipedia articles (New!) ▸ Popular adjectives describing pens ▸ Words that often appear near pens ▸ Rhymes of pens ▸ Invented words related to pens