We found 12 dictionaries that define the word preen gland:

General (8 matching dictionaries)

1. preen gland: Merriam-Webster
2. preen gland: Oxford Learner's Dictionaries
3. preen gland: Vocabulary.com
4. preen gland: Dictionary.com
5. preen gland: Rhymezone
6. preen gland: FreeDictionary.org
7. preen gland: Mnemonic Dictionary
8. preen gland: TheFreeDictionary.com

Computing (1 matching dictionary)

9. preen gland: Encyclopedia

Medicine (2 matching dictionaries)

10. online medical dictionary (No longer online)
11. preen gland: Medical dictionary

Science (1 matching dictionary)

12. Bird On! (No longer online)

(Note: See preen_glands as well.)

Definitions from WordNet (preen gland) ▸ noun:  oil-secreting gland situated at the base of the tail in most birds ▸ Words similar to preen gland ▸ Usage examples for preen gland ▸ Idioms related to preen gland ▸ Wikipedia articles (New!) ▸ Words that often appear near preen gland ▸ Rhymes of preen gland ▸ Invented words related to preen gland